Grand Jury: No charges for cops who killed 18-year-old murder suspect on I-694

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No charges will be brought against two Twin Cities police officers who fatally shot an 18-year-old man suspected of committing a murder last December, after he ran at them with a knife.

A Ramsey County grand jury on Wednesday returned a "no bill decision" in the case of Jonathon Dean Mar of Washington state, who was killed on Interstate 694 on Dec. 17 following a chase with police.

According to a Ramsey County attorney news release, the jury "determined that probable cause did not exist to charge" the Hennepin County deputy or the Brooklyn Center police officer with a crime, saying that the use of "deadly force was authorized" as per state laws.

Mar, of Kennewick, Washington, was the prime suspect in the killing of 23-year-old Matthew Paul Maffei, whose body was found with a fatal gunshot wound to the head earlier that same day at a rest area in Maple Grove.

After witnesses said the suspect had left the scene in a red SUV with Oregon license plates, police caught up with the vehicle driven by Mar, but when they tried to stop him he led them on a chase.

The chase ended when Mar lost control and hit the center median on eastbound I-694 and Rice Street in Shoreview, 20 miles from the rest area.

As police from multiple departments converged on the scene, Mar got out of the SUV and brandished a knife, charging at police before the Hennepin County and Brooklyn Center officers shot and killed him.

State laws say peace officers can use deadly force to protect themselves or others from death or great bodily harm, or to prevent the escape of someone believed to have committed a felony involving the use of deadly force.

The grand jury consisted of 23 randomly selected people. At least 12 members need to agree to return an indictment.

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