March 2 (UPI) -- A United Airlines flight made an emergency landing at Los Angeles International Airport on Monday after a possible engine fire was reported, authorities and the airline said.

United flight 2127 from Los Angeles to New York departed LAX at 10:43 a.m. PST, but was diverted back to the airport about 40 minutes into the flight, according to flight traffic tracker FlightRadar24.

After the Boeing 787-9 Dreamliner landed, slides deployed from its fuselage, which some passengers used to deplane. Uncorroborated video posted online shows passengers going down the slide, where firefighters met them on the tarmac before they ran from the plane.

United Airlines confirmed to UPI in a statement that the flight "safely returned to Los Angeles" and that the issue was "a possible engine fire."

"Customers deplaned via slides and airstairs and were bused to the terminal," the company said.