Four persons who attempted to murder a businessman in Negombo have been arrested along with firearms.
A T-56 assault rifle, two pistols, 19 live rounds, and a foreign-made grenade were seized, Police said.
Police said, they received a tip-off that a group was plotting to kill a businessman because he refused to surrender to their extortion rackets, and an operation was launched to arrest them.
Investigations show they are close associates of two suspects involved in organised crime who are in hiding overseas.
The suspects are residents of Kotuwegoda and Minuwangoda.