Some miscreants damaged furnishing and curtains of a mosque at Bicharwari village in Kralgund by setting them on fire late last night, they said.
Infuriated over the incident, people staged protests against the sacrilegious act this morning, police said.
The protesters were dispersed peacefully after civil and police officials reached the spot and assured them that the guilty will be brought to book.
They also assured the protesters of increasing police patrol in the area.
A case has been registered, police said adding, efforts were being made to arrest the people involved in the illegal activity.