Story highlights The slain officer was identified as Christopher Ryan Morton, 30

This is the second police officer killed in Clinton in a year

(CNN) A shooting incident that left one police officer dead and two others injured in Missouri started with a 911 phone call punctuated by screams.

During the call, which came in around 10:20 p.m. ET Tuesday, two women could be heard screaming in the background at the home in Clinton, said Sgt. Bill Lowe of the Missouri State Highway Patrol.

When Clinton Police Department officers rushed to the scene, gunfire erupted.

The shooter barricaded himself in the home, leading to a nearly two-hour standoff, Lowe said.

One officer, later identified as 30-year-old Christopher Ryan Morton, was fatally shot inside the home, according to the state patrol. Two others were in stable condition and being treated for gunshot wounds -- one in the arm and the other in the shoulder.