The stabbing took place last night when Ravi, a resident of Vijay Nagar area, was playing gambling with Dilip and his sons Vicky and Muttu.
"When they were gambling in Balmiki Basti last night, a dispute erupted over Rs 10 between them. Victim's father alleged that Dilip and Vicky caught hold of Ravi and Muttu stabbed him," a senior police officer said.
The trio fled the spot while Ravi was rushed to district hospital, where doctors declared him dead on arrival.