In an apparent fallout of the Cauvery issue, unidentified attackers on Thursday pelted stones at an office of the Indian Oil Corporation (IOCL) in Chennai, damaging some glass panes.
The incident occurred early this morning, police said.
The miscreants also left behind pamphlets, slamming the Centre on the Cauvery issue, they said.
In Erode, a textile laden lorry with a Karnataka registration number was set ablaze by two persons near Chitode, 15 km from from Chennai, early this morning. The duo fled the scene after the crime.
Police said it was not immediately clear if it was related to the Cauvery issue and that they were questioning the two drivers, whose replies aroused suspicion.
The drivers claimed that they could not clearly see the two persons who burnt their vehicle nor the car registration number.
Police said that some buses, mainly private, were operated to Chamrajnagar and Mysuru from the district on Thursday.