The occupants of the vehicle were on their way from Punarli to Naren when the mishap took place in Tikker sub tehsil of Rohru, about 110 km from here.
Four of the five victims were government employees identified as - Gobind Ram, Shyam Pal, Chetram, Ravi Kumar and Naren.
The cause of the accident could not be ascertained and a case has been registered and investigations are underway, police said.
The District Administration has given immediate relief of Rs 10,000 to the kin of each victim.