Irene Yaskovich, 53, who was killed by a sniper late Thursday night while sitting at a table in her home in Wheaton, was a civic activist and retired government employe.

Montgomery County Police said that Mrs. Yaskovich was sitting in her dining room when three bullets were fired through a picture window, one of them striking her in the back.

In a interview Sunday, police said they had no suspects or motives in the shooting. Mrs. Yaskovich was home alone at the time of the shooting. Her body was discovered shortly after midnight, about 45 minutes after the shooting, by a daughter who had just returned from work.

Mrs. Yaskovich had been secretary of the Arcola-University Civic Association since the early 1970s. She was a neighborhood activist who fought for more street lights on Arcola Avenue and against subsidized housing planned for the area around Sligo Creek.

This past year, she had been a partime volunteer in the Maryland congressional campaign of Republican Newton Steers.

She was a member of the St. Gregory Byzantine Catholic Church in Beltsville and had been active in several of the church's organizations.

Mrs. Yaskovich was a native of Pennsylvania and worked as a secretary for the Bureau of Mines and the Air Force Department before coming to this area in 1952.

She was a secretary in the Interior Department, then a Russian and Ukrainian language translator with the Central Intelligence Agency. She then spent a year as a secretary in the contracts division at Harry Diamond Labs before retiring in 1955.

She had attended Georgetown University's Institute of Language and Linguistiics.

Mrs. Yaskovich had lived in Wheaton for the past 25 years.

Survivors include her husband of 27 years, retired Air Force Lt. Col. Harold Yaskovich, of Wheaton; a son, Gregory, of Rockville; two daughters, Carole Yaskovich of Wheaton, and Janis Yaskovich of Rockville; a brother, Michael Komichak of Pittsburg; two sisters, Mildred Kurelis of McKees Rock, Pa., and Genevive Saylak of Bryan, Tex., and her father, John Komichak of McKees Rock.