Security has been beefed up for business establishments owned by Kannadigas and also outside the homes of noted Kannada personalities in Tamil Nadu, police said on Monday.
Police also said action has been taken against the assailants who had attacked the New Woodlands Hotel.
A group of unidentified assailants attacked the New Woodlands Hotel in Mylapore over the ongoing Cauvery row between Karnataka and Tamil Nadu, police said.
"Around 3.15 a.m., a group came to the hotel and damaged glass panels. It seems the group attacked the hotel in protest against Karnataka's attitude in release of Cauvery river water," a police official told IANS.
A hotel employee confirmed the incident, adding that no one was injured in the attack.
On Friday, there was shutdown in Karnataka protesting the release of Cauvery river water to Tamil Nadu.