Three hotels in Tirupati, Andhra Pradesh, received bomb threats via email on Thursday, prompting immediate police investigation. Authorities, accompanied by sniffer dogs, conducted thorough searches, confirming the threats were hoaxes. The hotels are located in Leela Mahal, Kapila Theertham, and Alipiri. The email's subject line warned of an attack involving the "Pak ISI" and ordered evacuation.