An 18-year-old boy went missing after he entered a lake in Thane city on Sunday, triggering a search operation, which was paused after nightfall, an official said.

Sahil Ghorpade was swimming with his friends in the Rayladevi Lake in the Wagle Estate area when he went under the water around 5.30 pm, said Yasin Tadvi, chief of the Disaster Management Cell of the Thane Municipal Corporation.