Security agencies probing the attack on Indian Institute of Sciences in Bangalore do not rule out such strikes in Mangalore in Karnataka and some other cities in adjacent Andhra Pradesh.

According to sources in intelligence agencies, Mangalore and other cities in Andhra Pradesh were turning as hubs of Lashkar-e-Tayiba activities and the sleuths feared activation of some more "sleeping cells" of the Pakistan-based militant outfit to carry out attacks of such nature.

• Probe into IISc attack moving in right direction: Police

Security officials probing the Bangalore attack have found the imprint of LeT in it and three persons have been detained in this connection.

The three detained persons are believed to have links with LeT and also follow the Al Hadees sect of Islam, the same followed by LeT.

They were expected to throw some light on the incident, including the people behind the conspiracy, informed sources said.

According to the investigations so far, the LeT had put in service its activists who had been trained in Bangladesh and Saudi Arabia to carry out the attack, which left an emeritus professor of Delhi Indian Institute of Technology M C Puri dead and four injured.