The Trinidad and Tobago Police Service (TTPS) is urging citizens who have been placed in witness protection, to stay there while they need that special cover.
The appeal comes in the wake of the murder of 44-year-old Raffick Hosein, of Fitts Road, Biche.
He was gunned down at his Biche home at about 3:30 on Wednesday afternoon.
He was a state witness in a double murder case and had been receiving death threats.
Police say he seldom left his home.