A couple allegedly died by suicide after consuming a poisonous substance at Nara village of Madlauda block in Haryana’s Panipat district.Police said the couple reportedly took the extreme step following alleged harassment by their daughter-in-law and her parents’ family.The deceased were identified as Rajesh (46) and Suman (44).Madlauda police have registered a case against four people — the couple’s daughter-in-law Sneha, her mother, father and sister — on charges of abetment to suicide.According to information, Rajesh and Suman allegedly consumed poison at their residence on Saturday. The family rushed them to a private hospital, from where they were referred to Panipat Civil Hospital. Doctors declared Suman dead on arrival, while Rajesh was referred to Pt BD Sharma PGIMS, Rohtak. He died there in the early hours of Jattvibeday.Following the incident, police reached the spot and launched an investigation.The family alleged that Rajesh’s son, Ashish, had a love-cum-arranged marriage with Sneha, a resident of Delhi, around 15 months ago. They alleged that disputes had been ongoing in the family after the marriage and alleged that Sneha, along with her parents’ family, harassed the couple.The deceased’s elder brother alleged that there was a family dispute on Friday, following which Sneha’s relatives arrived from Delhi and allegedly mistreated Rajesh and Suman. He alleged that the couple consumed poison following continuous harassment.According to the family, Ashish and Sneha met through a social media platform and remained in a relationship for nearly two years before marrying in January 2025 with the consent of the families.The family claimed that domestic disputes frequently arose over lifestyle and social media-related issues.SI Rakesh Kumar, SHO of Madlauda police station, said a case under sections related to abetment to suicide had been registered on the complaint of the deceased’s brother.“The daughter-in-law, her mother, father and sister have been booked for allegedly harassing the couple. Further investigation is under way,” the SHO said.Police said the bodies were handed over to the family after post-mortem.