Idukki: Bob threats have been received at three places in Idukki, including the Mullaperiyar dam. The message is that bombs have been planted at the Idukki Collector’s Office, Muttom Court and Mullaperiyar Dam. The threat message was sent to the mail ID of the Muttom court. The e-mail was sent in the name of Sameer Kushba. The search has been intensified under the leadership of the Idukki police and the bomb squad.