A late-night heated argument was not something that could have surprised neighbours of Sarita, 27, and her husband Devender Yadav.
According to neighbours, the couple had a history of altercations but an argument on Tuesday night apparently took a fatal turn.
On Wednesday afternoon, when Devender was away on work, Sarita allegedly brutally killed her two children - by drowning her daughter six-year-old Pari in the washing machine and 11-month-old son Rudraksh in a bucket - before hanging herself from the ceiling fan.
Devender, who works in an export house, was the only earning member of the family and had married Sunita about eight years ago. Though no member from Sarita's family could be reached, her neighbours accused her of being ''too demanding''.
"There were no problems in their family until Devender got married to Sunita. She was very dominating and demanding. She always looked for a reason to engage in a squabble with her husband. They had a fight last night and probably that led to the three deaths," said Asha Singh, a social worker and one of the neighbours of the couple.
Devender said his son was going to turn one-year-old within a couple of days. "My son would have completed one year within a few days. I don't know why did she do this to my children?" he said.
Referring to the argument on Tuesday night, Devender said: "I tore off a few photographs in anger. But there was nothing that could have prompted Sarita to take such an extreme step."
Sarita's in-laws live on the ground floor of the house.
According to the neighbours, they came to know about the incident at 2:30pm when they heard cries coming from the house. Police was informed and the bodies were sent for post-mortem examination.
"Normal bickering was quite common in their family. Once a complaint was also lodged with the women's cell but it was resolved later," added another neighbour.