Three locally made bombs and 100 grams of ammonia were found buried in the backyard of a mosque at Welipenna last night, police said.

The explosives were recovered during a joint operation carried out by the STF and the police.

Police said a 42-year-old suspect was arrested over the recovery of explosives.

Meanwhile, the police  seized 16 circuit boards of high technology, 16 SIM cards, several compacts discs, computer accessories and a car in a house at Pirivena Mawatha in Mount Lavinia.

Police said each circuit board had the capacity to contain 12 SIM cards.

They arrested a 52-year old man along with the items.

Video by Ruwandi