The green colored grenades, marked with “GRENADE HAND COLOURED SMOKE BLUE MK IV LOT 15 SME 6-09 CCC” were found by a police team who were carrying out an operation dubbed as “Op Cegah Jenayah” around 3.30pm.

Kuala Lumpur Police Chief Amar Singh Ishar Singh said the grenades were typically used by the police, including the Federal Reserve Unit, and he did not rule out that it might also be used by the armed forces.

He said further investigation revealed seven fingerprints on both grenades.

“The grenades are believed to have been released by a company in Batu Arang and are part of Lot 15, 6-09 edition (July 2009).

“We will check with the SME to confirm whether the grenades were issued to the police, armed forces or other parties,” he said.

He added that the case was being investigated under Section 8 of the Explosives Act 1957.