Thiruvananthapuram/Ernakulam/Mumbai/Tirupati, July 28 : Major cities have been on high alert over fears of more terror strikes after at least 46 people were killed in two days of bombings in Ahmedabad and Bangalore.

Police conducted security checks and sounded a high alert in Kerala following the threats.

Reportedly, a television channel in Karnataka received an e-mail threatening that Kerala would be the next target of the terrorists.