Police personnel along with Bomb Detection and Disposal Squad went to the hillock and defused the bomb, which was connected to a time device, yesterday.
Police said the bomb was packed in a polythene bag and kept in a plastic bucket. The timer of the bomb, connected to 16 nine volt batteries, was set for 11 PM yesterday.
The seized material had been sent to Chennai for examination, police said.
In May this year a low-intensity bomb rigged to a cycle exploded near an auditorium-cum-temple complex here causing a security scare ahead of the BJP state-level conference.
In October last year, a pipe bomb was unearthed at a nearby village on the Jan Chetna Yatra route of BJP senior leader L K Advani.
