(BOSTON, MASSACHUSETTS, USA) A 28-year-old Indian graduate student was arrested at Boston’s Logan Airport after he allegedly stabbed passengers with a metal fork on a Lufthansa flight from Chicago to Germany on October 25, 2025, forcing the plane to divert with 363 people on board. Federal prosecutors say the student, identified as Praneeth Kumar Usiripalli, is now facing a serious federal assault charge that could carry up to 10 years in prison and long-term immigration consequences.
What happened on the flight
According to court filings, the incident began about two hours into Lufthansa flight LH431, shortly after meal service. Usiripalli, who was traveling as a passenger, allegedly turned toward a 17-year-old boy who was lightly sleeping in a middle seat and stabbed him in the left clavicle, near the shoulder. Investigators say the attack came without warning.
Officials say the graduate student then lunged at a second 17-year-old boy seated next to the first and stabbed him in the back of the head, causing a laceration. The metal fork used in the attack had been provided during meal service.
Both teenagers were able to move away from the row as flight attendants and other passengers reacted to what witnesses later described as a sudden and frightening burst of violence in the crowded cabin.
When members of the flight crew tried to subdue him, prosecutors say Usiripalli made a gun shape with his fingers, put it in his mouth, and mimed pulling the trigger. He then allegedly slapped a female passenger and tried to slap a flight crew member as they attempted to restrain him.
Flight attendants later told authorities he was mumbling incoherent statements during the incident. No clear motive has been made public.
Diversion and arrest
With tensions rising on board and passenger safety in question, the pilots diverted the aircraft to Boston Logan International Airport rather than continuing across the Atlantic. The long-haul flight, scheduled to reach Germany, instead landed in Boston, where law enforcement officers were waiting.
After the plane reached the gate, authorities boarded, removed Usiripalli from the aircraft, and placed him under arrest while medical staff checked on the injured teenagers and other passengers.
Lufthansa confirmed that flight LH431 from Chicago was diverted to Logan Airport and that a passenger was taken into custody upon landing, but the airline has declined to provide more details about the individual involved.
The diversion delayed hundreds of travelers, many of whom faced missed connections and overnight changes to their journeys. For many passengers, a routine transatlantic trip became a stressful and frightening experience in a confined, packed cabin.
Identity, visa status, and academic background
Federal prosecutors say Usiripalli is an Indian national who entered the United States on a student visa and was enrolled in a master’s program in biblical studies. Authorities now say he does not currently have lawful status in the United States.
General information on nonimmigrant student visas is available on the U.S. Department of State official student visa page at https://travel.state.gov/content/travel/en/us-visas/study/student-visa.html, which explains how foreign students can study in the United States 🇺🇸 and the basic conditions tied to that status.
Federal charge and potential penalties
Court documents state that Usiripalli has been charged federally with assault with a dangerous weapon with intent to do bodily harm while traveling on an aircraft in the special aircraft jurisdiction of the United States. This is a serious federal offense that covers violent acts committed on aircraft under U.S. jurisdiction.
Key potential penalties if convicted:
| Penalty type | Maximum |
|---|---|
| Prison time | Up to 10 years |
| Supervised release | Up to 3 years |
| Fine | Up to $250,000 |
He is scheduled to appear in federal court in Boston at a later date, where a judge will address his detention status and future hearings.
Immigration consequences
For immigration lawyers, the case highlights the delicate position of many international students whose presence in the United States depends on visa status and compliance with both immigration and criminal laws.
- A foreign national charged with a violent offense on an aircraft may face:
- Criminal penalties (prison, fines, supervised release)
- Removal (deportation) proceedings after the criminal case concludes
- Long-term bans on reentry if convicted
While each case is decided individually, serious criminal charges often draw close attention from immigration authorities once the criminal process moves forward. Details about any such steps in Usiripalli’s case have not yet been made public.
Public reaction and analysis
According to analysis by VisaVerge.com, the case drew interest partly because it involves a graduate student whose life path, at least on paper, seemed far from violence: a young Indian national admitted on a student visa pursuing a master’s degree in biblical studies in the United States.
That contrast — between academic life and an alleged mid-flight attack — has left many wondering what could have led to such behavior. Investigators have not offered any motive; officials have said only that no motive has been publicly disclosed and that the investigation is ongoing.
Jurisdiction and investigative response
The alleged attack took place midair, before the aircraft left U.S. jurisdiction, which brings the case under federal law. The special aircraft jurisdiction of the United States covers certain flights where U.S. law applies even when the plane is not physically on the ground.
In this case, diverting to Logan Airport allowed federal and local officers to respond quickly once the plane landed, secure the scene, and begin interviewing witnesses, passengers, and crew members.
Victims and current status
For the two 17-year-old boys who were stabbed, the incident turned a long-haul flight into an emergency:
- One suffered a wound to the shoulder area (left clavicle).
- The other had a laceration on the back of his head.
Authorities have not released their names because of their ages, and there has been no detailed public update on their medical condition beyond the initial descriptions. The female passenger who was slapped and the flight crew member who was nearly struck have also not been named in public documents.
Key takeaway
A single person’s actions on board can force a full international flight to change course, create immediate safety emergencies, and trigger both criminal and immigration consequences. The incident on Lufthansa flight LH431 underscores the intersection of airline safety, federal criminal jurisdiction, and immigration status — and the cascading impacts that follow an in-flight emergency.
On Oct. 25, 2025, Praneeth Kumar Usiripalli allegedly stabbed two 17-year-olds with a metal fork on Lufthansa flight LH431 from Chicago, forcing the aircraft carrying 363 people to divert to Boston Logan. He was arrested on landing and faces a federal charge of assault with a dangerous weapon aboard an aircraft, punishable by up to 10 years. Prosecutors say he arrived on a student visa and currently lacks lawful U.S. status. Investigations continue and immigration consequences are possible.
