Police are searching for a group of men, who killed a security guard and seriously injured another while robbing a supermarket in Laventille, along the east-west corridor on Sunday night.
Police said that Jody Awai, who died at the scene, suffered extensive injuries to his head.
The other security guard, who was not identified, has been admitted to the Port of Spain General Hospital in a serious condition.
The lawmen said that the gunmen had attempted to rob the Mac Foods Supermarket when they were confronted by the security guards on the compound.
The group later stole a number of items before fleeing.
So far nearly 500 people have been murdered in Trinidad this year.