The accused, Harsimran, allegedly hatched plots from inside the jail when he was arrested in the past. He had even picked up a fight with an Indian Mujahideen member to establish his hegemony inside the jail, police said.
Police claimed to have worked out four cases of extortion and Arms Act with his arrest.
He is a dreaded criminal and is involved in a total 15 cases including two murders at Burari and Mandir Marg areas, a senior police officer said.
There were complaints he had demanded an extortion amount of Rs 5 lakh from two people. While in jail he had also planned to fire at the complainants but it was foiled as special cell intercepted his voice.
"Despite this, he succeeded in executing his plan through his gang members, who fired at the parked car of one of the complainant to terrorise him," the officer said.