A cinema house here has received a letter threatening that bomb explosions would take place within its premises besides seven other movie halls on the day when the Ajit-starrer "Ennai Arinthal" is to be released, police today said.
After receiving the threat letter yesterday, the manager of Udayam movie hall, Hariharan lodged a complaint with police.
Following this, bomb disposal squad searched the premises and further probe is on, police added.
The movie is expected to release soon.