Tirupati, Oct. 18 -- Police were put on high alert on Saturday after the Tirupati Collectorate in Andhra Pradesh received an anonymous bomb threat email. However, a thorough search revealed the threat to be a hoax, police said.

According to officials, bomb squad and dog squad teams inspected various sections of the Collectorate and surrounding areas.

After checking the Collector's chamber and other offices, authorities confirmed that no explosive materials were found.

Officials traced the origin of the threat email to Tamil Nadu, they said.

More details are awaited.

Earlier, a similar incident occured last week in Tamil Nadu when the Director General of Police (DGP) office received a bomb threat via email on Thursday night. The email...