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UPDATE: On Thursday, a jury convicted Matthew Strickland of several charges.

Prosecutors say Strickland shot and killed his mother and wounded his stepfather during a gun battle at a Luther home back in May 2013.

Strickland was found guilty of first-degree murder, assault and battery with a dangerous weapon and wearing body armor during the commission of a felony.

The jury suggested Strickland be given life in prison for the murder charge, 10 years in prison for the assault and battery charge and five years for wearing body armor.

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LUTHER, Okla. - Jurors will hear closing arguments in the murder trial of Matthew Strickland Thursday morning.

Prosecutors say Strickland shot and killed his mother and wounded his stepfather during a gun battle at a Luther home back in May 2013.

Strickland has told investigators he didn't get along with his family and hadn't seen them in years but went home to get some of his belongings.

He's claiming self-defense, but prosecutors say what he showed up armed with paints a different picture.

Matthew Strickland told investigators, “I was preparing for the worst” in May 2013 after he allegedly shot and killed his own mother and wounded his stepfather.

Strickland, on leave from the military, arrived to his mother’s home wearing a bulletproof vest and knee pads.

Stepfather Ottie Sides testified in trial he and his wife, Jill Sides, were standing in the doorway of their home, talking to Strickland.

He admits they were armed but says the defendant pulled a gun and started shooting at them.

Sides says it happened so fast and doesn't know why anyone would kill his wife.

“She was awesome, loved her kids. She loved me, I loved her with all my heart,” Sides said.

Strickland did not take the stand on Wednesday but told investigators in 2013 his mother fired the first shots.

Prosecutors say Strickland used two guns in the shooting and had an AR-15 in his vehicle.

More questions than answers remain as to why it all happened.

Sides, who is restricted to a wheelchair from his gunshot wounds, misses his wife every day.

Strickland is charged with first-degree murder, assault and battery with a dangerous weapon, and wearing body armor during the commission of a felony.

If convicted, he faces life in prison.