SUNSET, La. (AP) — A police officer was shot and killed Wednesday when he responded to a call from a house where three women had been stabbed, one of them fatally, in a town about 60 miles west of Baton Rouge, said the sheriff of rural St. Landry Parish.

The man accused in the attacks drove from the house in Sunset, a town of about 2,900, and into a convenience store about three blocks away, barricading himself in an office and telling police that he wouldn't come out and was ready to fight, St. Landry Parish Sheriff Bobby Guidroz said.

He said SWAT team members lobbed tear gas and "C-gas" into the building, then broke in using hammers and fire axes to arrest Harrison Lee Riley Jr., 35, of Arnaudville, about 8 miles from Sunset.

Guidroz identified the dead as Officer Henry Nelson, 51, and Shameka Johnson, 40, and the wounded as her sister Shurlay Johnson, 34, and Wiley's wife, Courtney Jolivette Riley, whose age the sheriff didn't know.

All three women were stabbed, he said.

Nelson — one of six officers under Sunset Police Chief Louie Padilla — was the second Louisiana police officer killed in four days and the fifth in four months. State Trooper Steven LaValley was shot Sunday and died Monday. Shreveport Officer Thomas LaValley was shot to death Aug. 5, New Orleans Police Officer Daryle Holloway on June 20, and New Orleans public housing police Officer James Bennett Jr. on May 25.

Wiley was taken to a hospital for treatment of burns and irritation from the gases, the sheriff said.

Sometime later, the Sunset Mini Mart burst into flames. Firefighters quickly put out the blaze. The cause of the fire is not known.