Police on Wednesday found four bodies from a flat at Vakola in northwest Mumbai.

Vishnu Vithoba Desai, working as traffic superintendent in the commercial department of Indian Airlines, was found dead along with his wife, daughter and their maid servant in his flat in the airline colony, the police said.

Desai was due for retirement in few more months, the police said. The other victims, they added, have been identified as Desai's wife, aged between 46-48, daughter Vidya (22 years) and maid Nanda (between 35-40 years).

The cause behind their deaths was not known immediately and there were no injury marks on their bodies. However, foam was found in Vidya's mouth, whose nails had also turned blue, the police said. Consumption of poison might have caused the deaths, they added

Police said they were investigating the matter.