Aaron B. Covington, 30, a former All-Metropolitan basketball player at Mackin High School, collapsed and died Thursday night while practicing basketball alone at Glenarden Community Center in Prince George's County.

Mr. Covington father, Samuel Covington of Washington, said his son apparently died of a heart attack, but final confirmation on the cause of death will depend on the outcome of an autopsy to be performed at state laboratories in Baltimore.

An employe at the Giant warehouse c omplex in Landover, Mr. Covington grew up in Southeast Washington and was a standout on the Mackin High School basketball team during the late 1960s.

He attended Canisius College in Buffalo, N.Y., on a basketball scholarship and later was drafted by the Buffalo Braves of the National Basketball Association.

But he failed to make the team and spent the next three years playing basketball in Finland and Switzerland before returning to the Washington area where he went to work for Giant. He lived in Landover.

In recent years he had played on a variety of Giant-sponsored teams, and he was practicing for a game on Sunday when he collapsed and died.

In addition to his father, survivors include his wife, Hazel, and a son, Aaron Jr., both of Landover; two sisters, Geraldine Butler and Lorraine Parker, both of Washington, and three brothers, Norman and William, also of Washington, and Samuel Iii, of Wichita, Kan.