A man on trial at the Special Criminal Court gave no reply when asked by gardaí to account for the presence of 150kg of explosives in a car in which he was a front seat passenger, the court has heard.

Armed gardai found four bags of explosives in the boot of a car and 18 detonators under the front passenger seat when they stopped the vehicle on the Naas Road, the Special Criminal Court has heard.

A man arrested in connection with the investigation of the murder of David Douglas in July is expected to appear in court on Monday.