KRISHNAGIRI: Three men died, and another man suffered serious injuries after the car they were travelling in collided with a private bus near Hosur in Tamil Nadu’s Krishnagiri on Wednesday morning.The accident occurred around 4 am while the four men, staying in Bengaluru, were returning to their native place in the Dharmapuri district to cast their votes in the April 23 Tamil Nadu assembly election.A case has been registered, and police are probing what led to the accident.