A man died after falling on the Delhi Metro track as the train approached, an official said.

The incident at Janakpuri West Station in west Delhi, disrupted services for some time on the busy Blue Line, connecting Dwarka to Vaishali and Noida in neighbouring Uttar Pradesh.

"We cannot clearly call it a suicide as it seems that the man fainted and fell on track rather than throwing himself upon it. The officials are examining the CCTV footage," a Central Industrial Security Force (CISF) spokesperson told media. 

The incident occurred at 10.41 a.m. as the train going towards Rajiv Chowk approached the station.

Services remained affected for more than an hour as trains took a longer than usual halt at stations - 15 minutes at the Yamuna Bank station, according to a passenger.