ALEXANDRIA, Va. (AP) _ Harold August Serr, a former director of the Bureau of Alcohol, Tobacco and Firearms at the Treasury Department, has died of a cardiovascular ailment.

Serr, 93, died Monday.

He was born in Tyndall, S.D., and taught at the University of South Dakota and a South Dakota public school before moving to Washington in 1933.

He joined what was then the Alcohol Tax unit of the Internal Revenue Service in 1935. Serr became assistant director in 1956 and director of the ATF in 1964. His work included enforcement of the gun control act of 1968 and overhaul of liquor tax laws.

His wife of 63 years, Frances Newton Serr, died in 1992.

Survivors include two daughters, two brothers, three grandchildren and a great-granddaughter.