Police searched the home of a 26-year-old labourer and found 280 rounds of ammunition.
Around 2:10p.m on Friday, officers executed a search for firearms and ammunition at the home of the man at Haris Village, South Oropouche.
While no firearms were found, police found and seized the rounds of 7.62 ammunition which was in his bedroom,
He was arrested and is expected to be charged.
Police are continuing investigations.