Thane (Maharashtra), March 5 (IANS): A week after the sensational massacre of 14 family members and the subsequent suicide by killer Hasnain Warekar, police have on Saturday come up with multiple motives behind the macabre killings, including debts, sexual abuse of a sibling and his own psychological distress.

Joint Police Commissioner Ashutosh Dumbare said the statements by the sole survivor, Hasnain's younger sister Sabia Bharmal, revealed a huge financial debt of Rs.6.70 million and sexual abuse of one mentally-challenged sister.

Police also recovered certain medicines the killer used to consume for psychological treatment and they are now ascertaining details of the doctor who may have advised him the medication and the pharmacy from where he procured them, he added.

On Saturday (February 27), Warekar had invited his family members, including his parents, sisters, their children, his wife and his own two daughters, for a party to celebrate his elder daughter's sixth birthday. 

Later that night, he served them soft drinks spiked with sedatives and around 3.00 a.m. on Sunday (February 28), Warekar slashed their throats with a large knife, used to sacrifice big and small animals during Bakri Eid.

The daybreak on Sunday left many people shocked as 15 bodies, including Warekar's own, were found in a pool of blood inside the bungalow unnerving the quiet Kasarvadavali area of the city adjacent to Mumbai.

A few hours earlier, survivor Sabia, who did not eat much but took a little of the soft drink and slept, suddenly woke up to see the gory killings and witnessed her brother killing their mother who was begging for mercy.

Sabia managed to lock herself in one of the bedrooms and screamed for help from the neighbours.

"We will verify all the details, although all the family members are now dead. We shall speak with other relatives and acquaintances," Dumbare said.