They said the suspects had supplied a total of 2,958 rounds of live Type 56 ammunition to a group that was arrested at Siyambalanduwa on Sunday (21).
The Second-in-Command, described as an Army Major, and the soldiers were arrested from the Army camp in Ampara in which they were serving, Military Spokesman Brigadier Sumith Liyanage said.
He added that the ammunition was stolen during transshipment between an Army camp in Welioya to Ampara.
A fourth suspect described as an Army Captain is alleged to have struck the deal with underworld operatives and is currently evading arrest, he said.
He further said that the source of ammunition also remains a mystery since there are no shortages listed in the armoury ledgers.
According to him, the Major is the Second-in-Command of the respective Army camp while the soldiers include a driver and an assistant.
The Military is working closely with the local Police in this regard, he added.
The arrests come barely five days after a group of underworld operatives, including two women were arrested at Siyambalanduwa along with 2,990 rounds of live ammunition.
The group pretending to be on a fun trip was arrested by the Police who were acting on a tip-off.
Among those arrested was a person identified as ‘Laddu Roshan’ – described as a close accomplice of underworld figure ‘Kosgoda Sujee’.
Initial investigations had revealed that the ammo was handed over following instructions from another underworld figure known as ‘Jayalath Sudda’ who is currently serving time at the Galle Prison.