The Imo State Commissioner of Police, Chris Ezike, made this known on Tuesday while addressing newsmen in Owerri, the state capital.
According to him, in the ensuing gunfire, one of the armed robbers later known and identified as Ikechukwu Okpara was shot dead by Sergeant Chukwudi Iboko.
The police boss disclosed that Sergeants Iboko and Sunday Agbo later died on February 23 while receiving treatment at the hospital from gunshot injuries.
The three of the armed robbery suspects arrested, he said, were Justice Ogbona, Abiye Charles and Ikechukwu Nwanegbo, aka Modestus.
Exhibits recovered included AK-47 rifles with 100 rounds of live ammunition, AK-47 rifle breech NO 180-30-06723 with a live ammunition and AK-49 rifle with 175 rounds of ammunition including different types of vehicles.
The police commissioner said that the two policemen who died, including Otu Attang who survived the attack remained uncommon heroes, adding that they displayed gallantry, professionalism, courage and passion in defence of lives and property.
He added that the command recommended both the dead and living officers for promotion to Inspector General of Police, adding that the bank had also announced scholarship to the children of the deceased officers.