Romario Yarde was killed on August 10.
Detectives have made a breakthrough in the murder of a young man who was dropped off at the hospital with a gunshot injury earlier this month.
A man is now in custody for the shooting death of Romario Yarde, 20, of Bayville, St Michael.
Yarde was transported in a car to the Queen Elizabeth Hospital by unidentified men on August 10, after being shot while in Collymore Rock, but he died while undergoing treatment.