Kerala: After a low-intensity blast rocked the Collectorate premises in Mallapuram, north Kerala on Tuesday afternoon, police on Wednesday said that they have recovered a pen drive form the blast site containing the photos of Prime Minister Narendra Modi and other politicians.

According to reports, the police have recovered a paper box, a pen drive and a printed paper ascribing the blast to the base movement, apart from few wires and batteries.

“The pen drive recovered from the blast site has given details about previous operations.” There are indications that the group would strike again, Thrissur range Inspector-General M R Ajith Kumar said.

Three cars were damaged in the November 1 blast.