The Kelaniya Divisional Crime Investigation Unit found those pipes while they were in the possession of a resident in Paradise Watte in Kotahena. Rs. 431,000 in cash was also taken into the police custody along with the suspects.
The suspected engineers aged 31 and 35 are residents of the Hikkaduwa and Weligama areas, police said.They were to be produced before the Aluthkade No. 5 Magistrate Courts. Police are conducting further investigations.