PLANO, Texas (CBSDFW.COM) – Plano police are investigating after an officer shot a suspect with a knife who’s accused of stabbing a man.

It happened before 9 a.m. Monday in a parking lot along Parker Road near Archerwood Street east of Central Expressway.

Nathaniel Wilson was inside a nearby tire center and convenience store when the stabbing victim walked in. “It looked serious because on the back of his shirt there was a lot of blood.”

Wilson said the victim calmly asked the clerk to call 911. “And said the guy walked up to him and started saying some crazy things and just stabbed him.”

Police said they don’t know why the suspect stabbed the man.

Other eyewitnesses said they saw the victim running away from the suspect from behind the gas station. The eyewitnesses told us the suspect had two knives, one of them large.

Police said when the officer arrived on scene, he saw the suspect chasing the victim.

The officer then displayed his weapon, and told the suspect to put the knife down and get on the ground. But police said the suspect failed to comply, and that due to his continued his aggression, the officer shot him.

Wilson said he saw that too.

“They told him to drop his knife. He wouldn’t drop it. Police shot him.”

Both the suspect and victim were taken to the hospital.

No word on their conditions.

The police officer wasn’t hurt.

Police are also investigating the officer’s decision to shoot the suspect, which is standard procedure.

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