A scheduled joint-exercise by the Ghana Police Service, the Ghana Standards Board and the Narcotics Control Board (NA COB), to examine the 399 parcels of a substance suspected to be cocaine concealed on a cargo truck could not come off yesterday because officials of the GSB and NACOB failed to turn up.The truck was intercepted by the police at Nsawam last Friday.A source at the Police Criminal Investigations Department (CID) Headquarters told the Times that the three bodies agreed that their officials would meet at the Police Headquarters yesterday, to undertake the exercise but as at 12 noon, none of them had arrived."The case is a sensitive one and examination of the substance cannot be done without 'those officials," the source said.The truck on which the substance was concealed is at the CID headquarters.The Nsawam Police intercepted the cargo truck with the substances concealed in a special compartment of the truck last Friday at about 6.30 a.m.The people - two Togolese and a Ghanaian have been arrested and placed in police custody pending further investigations.They are Kofi Amewu, 30, the Ghanaian who was the driver, Kofi Deble, 35, and Kwame Anani, 34, both Togolese. The vehicle was said to have entered Ghana from Conakry, Guinea, loaded with cow legs and hide but on being inspected, police found the suspected cocaine hidden underneath the cow legs and the hide.Briefing the Ghanaian Times on Sunday, the Director of the Police Public Affairs Directorate, Deputy Superintendent of Police, Samuel Kwasi Ofori, said the police intercepted the vehicle upon a tip-off.Source: Ghanaian Times