He Made a Knife From Three Pens.
Then He Aimed for a Stranger’s Brain.
About thirty minutes before Alaska Airlines Flight 604 began its descent into Las Vegas on January 24, 2024, a fidgeting passenger returned from the restroom, crossed the aisle, and started punching and stabbing a man who was traveling with his wife and their seven-year-old son. Witnesses would describe “blood everywhere.”
The weapon was three ballpoint pens lashed together with hair bands — a homemade shiv the attacker, Julio Alvarez Lopez, later admitted he built before he ever boarded. He told the FBI he was trying to drive it through the victim’s eye and into his brain, because he had convinced himself the stranger was a cartel operative who had been following him.
On July 2, 2026, Lopez pleaded guilty in federal court to one count of assault with a dangerous weapon. He faces up to a decade in prison and is scheduled to be sentenced on September 22. This is the record of how a federal courtroom — not a state one — closed the case.
- 3penslashed with hair bands into a shiv he admits building before boarding — U.S. Attorney, District of Nevada
- 10years maxfederal exposure for assault with a dangerous weapon under 18 U.S.C. § 113(a)(3)
- 1felony countguilty plea entered July 2, 2026; sentencing set for Sept. 22 — DOJ
- 2018green cardyear the Mexican national was granted lawful permanent residence — Fox News / DOJ
Alaska Airlines Flight 604 left Seattle-Tacoma International Airport bound for Harry Reid International Airport in Las Vegas. According to the federal charging documents, other passengers noticed Julio Alvarez Lopez, 38, was “fidgety” during the flight. Roughly half an hour before landing, he got up, walked to the restroom, and returned. Then, without warning, he set upon a man seated across the aisle — a father flying with his wife and their seven-year-old son.
Lopez punched and hit the victim, then produced the homemade weapon and stabbed him repeatedly around the upper body and the eye. The victim’s wife moved to shield their son. The wounds required stitches; the injuries to the eye area were serious but, prosecutors say, not life-threatening. Crew members handed over flex-cuffs, and passengers helped restrain Lopez for the remainder of the descent. When the plane landed, officers from the Las Vegas Metropolitan Police Department boarded and took him into custody.
“Blood everywhere.”
Passenger account of the Flight 604 attack, as reported by witnesses · January 24, 2024
What separates this case from a spontaneous mid-air brawl is the weapon. It was not grabbed in the moment. Lopez bound three ink pens together with hair bands into a rigid stabbing point — a shiv designed to concentrate force where a single pen would bend. He admitted to investigators that he had assembled it before boarding the plane. A weapon built on the ground and carried into the cabin is, by definition, premeditation.
That detail is also the uncomfortable center of the security story. Pens are not contraband. They clear every checkpoint in every carry-on in the country, because a Transportation Security Administration screener has no basis to confiscate a writing instrument. The Flight 604 case is a reminder that the hard perimeter of airport security ends at the metal detector — and that intent, not the object, is what turns everyday items into weapons at 30,000 feet.
After the flight landed, Lopez waived his Miranda rights and spoke to investigators. What he told them removed any ambiguity about intent. He said he had armed himself with the homemade weapon and selected this specific victim — a stranger he admitted he had never seen before — because the man had been “looking at him in a harassing way.” He said he believed the mafia, or a cartel, had been chasing him for months, and that the victim was part of it.
Then came the line prosecutors put at the heart of the case. Lopez admitted that he had attempted to murder the victim by shoving the bound pens through the victim’s eye and into his brain. In the plainest terms available, according to the DOJ’s account of his own statement, this was an attempt to kill a random passenger over a paranoid conviction that had no basis in fact.
“He attempted to murder the victim by shoving the homemade weapon into the victim's brain.”
U.S. Attorney's Office, District of Nevada · describing Lopez's post-arrest admission · July 2, 2026
A stabbing in Las Vegas would normally be a Clark County matter. This one was not. Because it happened aboard an aircraft in flight, it fell inside the special aircraft jurisdiction of the United States — the body of federal law that governs crimes committed on commercial airplanes. Lopez was indicted by a federal grand jury and charged with one count of assault with a dangerous weapon, the felony codified at 18 U.S.C. § 113(a)(3), which reaches conduct aboard aircraft through 49 U.S.C. § 46506. The statutory maximum is ten years in prison.
The case moved through the U.S. District Court in Nevada. On July 2, 2026, Lopez pleaded guilty to the single count. A federal judge scheduled sentencing for September 22, 2026. He remains in federal custody without bail. The plea forecloses a trial: the guilty plea, entered on the record, is the closest thing the law has to a full admission.
Defendant: Julio Alvarez Lopez, 38 — a Mexican national granted lawful permanent U.S. residence in 2018.
Flight: Alaska Airlines Flight 604, Seattle to Las Vegas, January 24, 2024.
Weapon: three ballpoint pens bound with hair bands, assembled before boarding.
Charge: one count of assault with a dangerous weapon, 18 U.S.C. § 113(a)(3) — up to 10 years.
Status: guilty plea July 2, 2026; sentencing September 22, 2026.
The guilty plea did not happen on its own. Three agencies built the case. The FBI’s Las Vegas Field Office, under Special Agent in Charge Christopher S. Delzotto, led the investigation. The Federal Air Marshal Service, with Supervisory Air Marshal in Charge Garrett Donaldson, handled the aviation-security side. The Las Vegas Metropolitan Police Department made the initial arrest on the tarmac. The prosecution was announced by First Assistant U.S. Attorney Sigal Chattah for the District of Nevada, with Assistant U.S. Attorney Brenna Bush carrying the case.
It is worth marking what did not happen. No one downgraded the charge to a misdemeanor. No plea deal quietly dropped the assault to disorderly conduct. A man who admitted trying to kill a stranger is looking at a federal felony and up to ten years. That is the system working as it is supposed to — the point of accountability journalism is to note it both when the machinery fails and when it holds.
Assaulting a fellow traveler with a weapon aboard a commercial flight is a federal crime. The Flight 604 case was investigated by the FBI Las Vegas Field Office alongside the Federal Air Marshal Service and Las Vegas Metro, and prosecuted by the U.S. Attorney's Office.
The headline calls Lopez a Mexican national, and he is. But accuracy demands the full fact: he was not in the country illegally. He was granted lawful permanent resident status — a green card — in 2018, six years before the attack. Framing this as a border-security story would be dishonest, and this site does not manufacture a narrative the record will not carry. The credibility of every other fact on this page depends on getting this one right.
Where immigration law does bear on the outcome is at the other end of the case. A green card is not permanent if its holder is convicted of a serious crime. Assault with a dangerous weapon is the kind of violent felony that, under federal immigration law, can qualify as a crime involving moral turpitude or an aggravated felony — either of which can strip a lawful permanent resident of that status and expose him to removal after his sentence. Whether the government pursues deportation once Lopez finishes his prison term is a separate proceeding from the criminal case, and one worth watching.
Flight 604 sits inside a documented trend. The Federal Aviation Administration logged more than 2,000 unruly-passenger reports in 2024, and while the raw count has eased from the 2021 peak, the most dangerous cases have not. The FAA operates a zero-tolerance policy for violent behavior aboard aircraft and has referred more than 310 of the most serious incidents to the FBI for criminal prosecution since late 2021. In-flight attacks — from passengers lunging at emergency doors to those who go after flight attendants and seatmates — are now a standing federal caseload, not a novelty.
The federal government’s message to would-be attackers is that the cabin is not a lawless space. The moment the doors close, a passenger is inside the special aircraft jurisdiction of the United States, and an assault there is prosecuted by the same Justice Department that handles federal crimes on the ground — frequently with stiffer exposure than a comparable state charge would carry.
There is a zero-tolerance policy for unruly and dangerous behavior on aircraft. The FAA refers the most serious cases to the FBI for criminal prosecution — hundreds have been referred since 2021.
