India, Aug. 25 -- The Delhi Police on Monday launched a large-scale search-and-rescue operation after a woman reported that her 21-year-old brother had jumped into the Yamuna from the DND flyway bridge while on a video call with her late Sunday night.

Professional divers, along with rescue teams from the National Disaster Response Force (NDRF) and the Delhi Disaster Management Authority (DDMA), scoured the river from midnight through Monday evening, but neither the man nor his body had been found, officials said on Monday.

His motorcycle and mobile phone were recovered from the bridge.

According to the police, the caller - a Civil Services aspirant in her 20s, who lives in a rented house in Karol Bagh - told police that her brother had...