A Delta flight that had left Incheon, South Korea, bound for Atlanta was forced to make an emergency landing at Haneda airport in Tokyo Thursday night after smoke entered the cabin, the Tokyo Fire Department said.

Delta Flight 26, which left Incheon airport at 6:30 p.m., was over the Pacific Ocean just past 9 p.m. Thursday when smoke and the scent of something burning was detected in the cabin, the fire department said, adding that the plane made an emergency landing at Haneda at around 10:40 p.m.

None of the 316 people on board was injured and the airline's maintenance crew is trying to determine the cause of the smoke.

According to Delta Air Lines, smoke was also detected in the business class section but the burning smell subsided after attendants switched off the in-flight entertainment system.

The trouble might be related to the in-flight electronic system, the airline said.