A rescue operation is under way after a man fell into an open drain in the Begampur area of Delhi’s Rohini on Tuesday, an official of the Delhi Fire Services said.The incident occurred days after the death of a 25-year-old motorcyclist, Kamal Dhyani, who fell into a 15-ft-deep pit in the Janakpuri area on February 6.The official said a call was received at around 7.45 pm, following which a rescue team was rushed to the spot.”Teams are at the site and rescue efforts are in progress,” the official said.