"We have completed the investigations into the attack and cracked the case," Inspector General of Police (IGP), Kashmir, Abdul Gani Mir told reporters here.
A former militant, Mukhtar Shah, was the fourth person to be arrested in connection with the attack for providing logistical support to the fidayeens who stormed a CRPF camp in Bemina in central Srinagar on March 13, killing five jawans, the IGP said.
"Investigations have not proved that this was a revenge attack," he said.
A huge cache of arms and ammunition was also recovered, he said. "Two AK 47s (with eight magazines), 240 AK rounds, one UBGL, 40 rifle grenades, 40 hand grenades, two pouches, two anti-tank mines, 12 RC's, one map, two light bags, three GPS devices, two compasses, two wireless sets, two time bombs (charge, timer and detonators), pencil cell batteries and a transparent poly - pack containing 'Made in Pakistan' medicines and ointment, have been recovered," he said.
"One Pakistani national Mohammad Zubair alias Talha Zaraar of Multan who belongs to LeT was arrested from Chattabal area of Srinagar and was the facilitator and controller of the two fidayeens (suicide militants)," Mir said.
Two former militants, Bashir Ahmad Mir and Mukhtar Shah, who provided logistical support to the attackers, have also been arrested, he said, adding, another person Pradeep Singh, a contractual government employee has also been arrested.