PHILADELPHIA (AP) — Authorities say an argument over a break room light led to a deadly stabbing involving three workers at Philadelphia International airport. 
 
 The stabbing occurred around 11:30 a.m. Thursday near Gate E6 in what city police say was a "secure area." They say the three men work for a company that cleans planes for Frontier Airlines, but their names weren't released. 
 
 Police say one worker turned off a break room light, angering another worker. The third worker soon pulled out a knife, cutting one of the men across the abdomen. 
 
 The 28-year-old stabbing victim was pronounced dead at a hospital. 
 
 Authorities say the two other workers ran off but were soon confronted by police. It wasn't clear what charges they may face. 
 
 Frontier Airlines referred all questions to the cleaning company. 
 
 ___ 
 
 This story has been corrected to show the men were not employed by Frontier Airlines, but worked for a company that cleans the airline's planes, as per police. ||||| Bloodshed inside Philadelphia International Airport. What started as a fight between airport workers ends with one of them stabbed to death. 
 
 An argument over a light switch escalated into a deadly stabbing Thursday morning at Philadelphia International Airport, police said. 
 
 The stabbing happened around 11 a.m. in a break room for Worldwide Flight Services, an airplane cleaning contractor for Frontier Airlines, in Terminal E. 
 
 Philadelphia Police Lt. John Walker said one man turned out a light in the break room, upsetting another man sitting there. The two then got into an argument over the lights. 
 
 Walker said a third man then got involved and after some shoves, he pulled out a knife and stabbed one of the man in the thigh. Police initially said he was slashed in the stomach. 
 
 
 
 The stabbing left the victim, 28-year-old Aaron Jenkins, seriously injured. He was rushed by paramedics to Penn Presbyterian Trauma Center in University City where he later died, Walker said. 
 
 Both the alleged doer — identified by police Friday as 35-year-old Kevin Emanuel — and the other man involved in the fight ran from the break room, part of a secure area on the tarmac, to the departures hall. They surrendered when police confronted them. 
 
 All three men work for Worldwide Flight Services. Initial information provided by police said they were Frontier employees. 
 
 
 
 Police have not yet recovered the weapon, but investigators believe it may be a box cutter used as part of the their jobs. 
 
 
 
 "Obviously, it was a pretty sharp object to get through his stomach and obviously hit some vital organs," Walker said. 
 
 The incident never disrupted service at the airport or endangered travelers. 
 
 Emanuel is charged with murder and possession of an instrument of a crime. It's not clear if he's retained legal counsel.
– Authorities say an argument over a break room light led to a deadly stabbing involving three workers at Philadelphia International airport, the AP reports. The stabbing occurred around 11:30am Thursday near Gate E6 in what city police say was a "secure area"; NBC Philadelphia says it was a break room for Worldwide Flight Services, an airplane cleaning contractor for Frontier Airlines, that is located on the tarmac. The men's names weren't released. Police say one worker turned off a break room light, angering another worker. The third worker soon pulled out a knife, cutting one of the men across the abdomen. The 28-year-old stabbing victim was pronounced dead at a hospital. Authorities say the two other workers ran off but were soon confronted by police. It wasn't clear what charges they may face.