DALLAS (CBSDFW.COM) – According to KRLD’s L.P. Phillips, the man accused of killing Richardson police officer David Sherrard was prepared to ambush arriving officers.

brandon mccall Report: Alleged Richardson Cop Killer Was Setting Up Ambush

(credit: Richardson Police Department)

Affidavits that had been sealed until Thursday afternoon, paint a picture of Richardson police walking into a tactical ambush on February 7.

Officers went to the Breckinridge Point Apartments near Renner Road and North Star Road around 7 p.m. in response to a disturbance call. When officers arrived, they located a man, Rene Gamez, suffering from a gunshot wound outside a locked apartment door. Gamez later succumbed to his wounds.

Officers kicked in the door and proceeded to enter the apartment with their guns drawn while saying “police” loudly and very clearly. Shortly after, they were met with unrelenting gunfire from an AR-15 that had a scope on top.

Officer David Sherrard was the first officer inside the apartment … taking a fatal shot to the upper body six seconds after entering. According to the affidavit, Sherrard wasn’t even able to get a shot off. Sherrard yelled, dropped his flashlight and weapon, and walked out the front door without any assistance. He was rushed to Plano Medical Center but died from his injuries.

screen shot 2018 02 08 at 11 27 41 am copy Report: Alleged Richardson Cop Killer Was Setting Up Ambush

David Sherrard (credit: Richardson Police Department)

Other officers say the suspect, Brandon McCall, had them pinned down as they returned fire.

One of the officers involved in the shootout described McCall’s position in the court documents:

“I saw what appeared to be a man lying on the ground in a prone position and moving his head back and forth looking around and the barrel of a weapon,” Sergeant Alcorn said in a statement. “It looked like he was hunting us.”

Officers also said that the suspect was moaning and acting as though he was wounded to draw officers out.

After a standoff that lasted over five hours, McCall surrendered to police. Witnesses said he shouted “I’m sorry” as he was taken into custody.

This is a developing nest story. Refresh for the latest details.