One of SpiceJet's plane engines caught fire, making an emergency landing at Bihta Airforce Station in Patna.

Engine Fire of Patna To Delhi SpiceJet flight SG725 with 185 passengers onboard caught fire soon after taking off from Patna airport. 

The pilot mid air took u turn, did emergency landing at Patna Airport.All passengers are safe. Big thank you to the pilots & ATC

The flight returned to the airport after an on-fire alarm was activated. All 185 passengers were safely evacuated, and no casualties were reported

Locals noticed the fire themselves and alerted authorities. Here's why the SpiceJet plane caught fire.

Fire Visual From outside Spicejet Plane.