Nineteen people were arrested after an orchestra bar was raided in Kashimira area in Thane district in the early hours of Saturday, Mira Bhayander Vasai Virar (MBVV) police said.

During the raid, which took place around 3am, a specially made cavity was discovered in the restaurant where four women were being kept in extremely dingy and dirty conditions that could have led to their death, said Senior Inspector Sanjay Hazare of Kashimira police station.