The victims of the late last night mishap were identified as Vijay (32) of Kharar, Shamsher (28) of Dabra, Baljeet (27) and Narender (22) both of Dhani Poorian village in Hissar district.
Police said that they had come Hansi to attend a marriage function in Jat Dharamshala yesterday and after that they went to village Gagan Kheri to drop their friend.
When they were returning to Hansi, the driver of the car, Narender, lost control over the vehicle and it slipped into a 30 feet deep drain killing all the four on the spot, police said.