The group was having tea at a shop in Kandhal near here, after performing some pooja at a graveyard when 47-year-old Govindan, parked his autorickshaw near the shop but fell on the woman when he was getting out of the vehicle, police said.
Enraged, about four persons assaulted Govindan, who fell down. Even though an ambulance was called, a doctor declared him dead.
Police managed to take into custody two persons - Vinod and Sekar - for questioning, during which they said the driver was in an inebriated condition and wanted to molest the woman in their group, police said.
The body has been taken for post-mortem, police added.