New Delhi, Nov 2 (IANS): A former Congress MLA's daughter-in-law was found hanging under mysterious circumstances at a house in Delhi's Sarai Rohilla area, police said Saturday.

Victim's family alleged that their daughter was killed for dowry. Her in-laws, however, claimed that she had committed suicide.

Rekha, 27, was found hanging inside her in-law's house Saturday morning.

Rekha's father Ashok Chaudhary, in his complaint, said in December 2012, he had organised her daughter's marriage with the son of former MLA Sadiram.

"A few days after the marriage, Rekha's in-laws started demanding more dowry. When I could not fulfill their continuous demand, they killed my daughter," Chaudhary said.

Sadiram, his wife and his son Sudhanshu have been arrested, police said.

"Victim's body has been sent for post-mortem to ascertain the exact reason behind the death as her family members alleged that she was killed by her in-laws for dowry," said a police officer.

"A probe in the case has been conducted and we are waiting for victim's post-mortem report before taking further action," the officer added.