A day after he received death threat from a person, claiming to be a gangster, the Bengaluru police said on Sunday that security has been tightened for Karnataka sports and fisheries minister K. Abhaychandra Jain.

"We have deployed additional personnel at Jain's residence and office, besides providing more security men after he filed a complaint about the threat call on his mobile phone on Saturday," S. Murugan, Mangaluru Police Commissioner told IANS.

The "gangster" accused Jain of being involved in the murder of Bajrang Dal activist Prashant Poojary at Moodbidri on 9 October and threatened him with dire consequences.

He also told the minister that since forests and environment minister Ramanath Rai was also involved in the murder, he too would not be spared.

Jain briefed Karnataka Chief Minister Siddaramaiah and Home Minister K.J. George about the threat call and sought more protection.

Murugan said that an FIR has been lodged on the basis of the minister's complaint and investigations are on.

"We are going to his call records to find from where and which number the accused had called and verify its voice content.

Since we have arrested nine people in connection with Poojary's murder so far, we will also interrogate them to ascertain if they know the caller and track him down as we are monitoring calls being made among the suspects," he said.

Poojary, a flower vendor, was hacked to death by six motorbike-borne men on 9 October for seizing a goods vehicle that was transporting cows to an illegal slaughter house in the town.

"Though the situation in the city and town is normal, we are maintaining strict vigil and monitoring of people and vehicles to ensure law and order," Murugan added.