Trichy (Tamil Nadu): As many as eight schools in Trichy district of Tamil Nadu received bomb threats over email on Thursday, said reports.The school authorities noticed the e-mail only after the schools opened this morning. Immediately, they informed the police and evacuated the school premises.Trichy bomb disposal squads and sniffer dogs were rushed to the school to search for the bomb the Trichy City Police said.On being informed, the police reached the school and the bomb detection team conducted thorough checking and nothing suspicious was found.As further investigation was underway. the police said they suspect it was a hoax mail.