"Girish Singhal, who was the first IPS officer to be arrested in the case, went to the SIB on instructions from D G Vanzara and collected the weapons," the chargesheet, filed yesterday in the court of Additional Chief Judicial Magistrate H S Khutwad, said.
The chargesheet further stated that Singhal later handed over the weapons to Nizamuddin Saiyed who, in turn, handed them over to Tarun Barot. Saiyed was Barot's commando.
Kalaswa was a police commando in the crime branch at that time and died in 2007. He has not been chargesheeted by CBI.
CBI's investigation has shown a total of 70 rounds were fired by five Gujarat cops from two .38 revolvers, a 9 mm pistol, three service rivolvers, one stengun and one AK-47 to kill Ishrat, besides three others who were in their prior custody.
