Lucknow: Chief Minister Yogi Adityanath was again threatened with a bomb. This time this threat was given over phone to the head constable posted at the security headquarters. In this case, FIR has been lodged in the metropolitan police station on Sunday. Head constable Udham Singh posted at the security headquarters has written in the complaint that he received a call on his mobile at 10.08 pm on Saturday night. The caller said that the Chief Minister would be blown up by a bomb. When Udham asked the name of the caller, he disconnected the phone. He immediately informed his officers about this. Inspector Akhilesh Mishra said that a case has been registered on Sunday. Four teams have been deployed to search for the accused. The surveillance cell is tracing the accused on the basis of his mobile number.