Tension prevailed at Panarur toll plaza near Chengalpattu after a fight broke out between a few lorry drivers and toll booth staff on Tuesday night.
The driver and the cleaner of the vehicle started an argument with the booth staff over this. Soon other lorry drivers also joined them.
The police said that the groups began attacking each other and on information, the Chengalpattu taluk police visited the spot. They held peace talks with them and admitted eight-person, who suffered minor injuries, to the Chengalpattu Government Hospital.
The police have also registered a case against three lorry drivers. Further inquiry is on.