The family stayed in the Warje area.
The deceased were identified as Nilesh Chaudhary, his wife Nilam (33), their daughters Shravani (9) and Shreya (7), Senior Inspector at Uttam Nagar police station Hemant Bhat said.
Nilesh had a plastic remolding business and was facing financial crisis. A suicide note, purportedly penned by him, was found from the flat, in which it was stated that he was taking the extreme step due to financial difficulties, the police officer said.
He said, "We suspect that Nilesh Chaudhary, before committing suicide, might have made his wife and daughters consume some poisonous substance and later strangled them."
"His neighbours alerted police after coming to know about the incident," the official said.
The bodies have been sent for post-mortem. The exact cause of the death of Nilam and her daughters will be known once the autopsy report comes, Bhat said.
Disclaimer: No Business Standard Journalist was involved in creation of this content