The trio —- Suresh Sharma (31), Giriraj Sharma (29) and Vicky Prasad (22) —- was roaming around the CPM party office at around 10.20 am when a few locals and party cadres apprehended them for questioning. They were immediately handed over to the policemen standing near the party office.

The trio was later brought to Taltolla police station and was interrogated there.

The sleuths found a 0.32 bore pistol on Suresh. They also came to know that Suresh and his brother Giriraj were residents of Bhind in Madhya Pradesh and the third man Vicky was a resident of Karbala Maidan Street in Kolkata.

As news of the incident spread, panic struck the party headquarters.

Top bosses were provided security and additional police personnel were posted at the party headquarters.

Suresh and Giriraj had arrived in the city recently and had bought the pistol at Kossipur Gun and Shell factory on April 25. They also had a license to carry the weapon.

“Suresh is the zonal secretary of DYFI in Bhind. He took his friend Vicky along with him to visit Alimuddin Street,” said an officer of Taltolla police station.