Six panchaloha idols were stolen from Balasubramania Temple in Jothi Nagar, Tiruvotriyur.
According to police, the temple idols have been kept inside an enclosure. When the priests opened the temple on Saturday morning, they found the iron-grille broken and idols missing.
The thieves had also broken open the hundi and decamped with cash and jewellery.
Sathankadu police have registered a case and are investigating.