A jeweller allegedly poisoned his wife and two minor sons before hanging self over financial constraints at Badi in Raisen district on Tuesday.
Jitendra Soni (35) first poisoned his wife Rinki (32) and two sons and then allegedly hanged himself in the room, the police said.
Jitendra, Rinki and their elder son Vaishnav (12) died, while the younger son Kartik (10) is battling for life is referred to Bhopal for treatment, additional superintendent of police (ASP) Amrit Meena told local reporters.
The family members learnt in the morning about the incidence.
The police have found a suicide note from the spot of incident in which Jitendra has claimed of suffered financial losses in his jewellery business and a land dispute in the family was reason for his taking such extreme step, the police said.
The police was further investigating the case.
