At a news conference, the minister gave details of the discovery of 10kg (22lbs) of ammonium nitrate - which can be used in improvised explosives - a computer with files containing information on bomb-making and a flash memory with instructions on how to build rockets.
He used a company he owned to purchase 4 tons of ammonium nitrate which Malaysian authorities are still searching for -- the same type of explosives used in the largest bomb blast in Bali.