Shreyas Gandhi, the accused, had sent threat-letters to banks, schools, hospitals, airport and even the Swami Narayan temple here, threatening to blow up these places, said the police commissioner E Radhakrishna.
Gandhi sent the letters under the names entered in the register of a cyebr cafe which he used to run before he started working at a share-broker's office, the commissioner said.
The letters had become a big nuisance for the police for the last two months, sending them on a wild goose chase every time.
He told the police that he sent the threats just for fun.