Police said SI's Durai and Premachandran were checking vehicles on Jan 13 when they got into an argument over an issue and entered into a scuffle on the road.
Durai was later transferredto Avaniyapurampolice station and Premachandran to Karimedu police station.
Commissioner of Police Shailesh Kumar Yadav today suspended Durai after a departmental inquiry found him guilty.