An unidentified man was shot and killed in Red Hills D'abadie Tuesday night, the third murder in just under seven hours.
It followed a double murder in Moruga Tuesday afternoon.
Investigators told Guardian Media they had not been able to immediately establish any motive for the killing in D'Abadie.
The shooting occurred shortly before 10 pm.
In an unrelated incident police also responded to a shooting in the Maloney area close to 9:45 pm after residents reported hearing rapid gunfire in the area.
Earlier Tuesday, two men were shot dead at Edward Trace in Moruga.
One of the men was unidentified while the other was identified as 48-year-old Vincent St Bernard.
The two men were shot around 2.45 pm.