A 17-year-old boy drowned while his friend and a teenage girl missing in a lake at Yeoor Hills in Thane in Maharashtra on Monday, a day after two persons drowned in the same water body in separate incidents, a civic official said.

A group of seven youngsters from the Samata Nagar area in Thane city had gone for a swim at the Neel lake, whose water level had gone up due to heavy rains recently, this morning, said Regional Disaster Management Cell (RDMC) chief, Thane Municipal Corporation, Santosh Kadam.