Police: I-694 homicide suspect had a knife, charged officers before he was shot

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The homicide suspect shot and killed by police officers on I-694 Wednesday reportedly charged at officers with a knife after crashing his vehicle on the highway, authorities say.

The Minnesota Public Safety Department issued a release Friday stating that high school student Johnathon Dean Mar, 18, of Kennewick, Washington, began repeatedly stabbing himself after exiting his crashed car on the interstate west of Rice Street, Shoreview, early on Wednesday morning.

Mar, who is suspected of killing 23-year-old Matthew Paul Maffei at a rest area on Interstate 94 and Weaver Lake road earlier that night, ignored calls from police to stop and get on the ground, instead charging at the officers while brandishing the knife, authorities say.

He died after being shot multiple times by the officers, who were identified by officials today as Deputy Matthew Hagen and Officer Alan Salvosa.

Hagen has been with the Hennepin County Sheriff's Office for 15 years, while Salvosa is a four-year veteran of the Brooklyn Center Police Department. They have both been placed on standard administrative leave.

How events unfolded

Maple Grove police responded to a shooting at the rest area after receiving a call just after 1 a.m. Wednesday and found Maffei dead at the scene after suffering a gunshot wound to the head.

The Bureau of Criminal Apprehension said that officers from six different police departments were then involved in a 100 mph chase of a red SUV with Oregon license plates that a witness had seen leaving the scene of the shooting, the Star Tribune reports.

The chase ended, the DPS says, when Mar lost control of the car and hit the center median on eastbound I-694, nearly 20 miles from where the shooting occurred.

Police continue to investigate the homicide case, saying on Wednesday they had "more questions than answers" as they seek to get to bottom of how and why Maffei was killed.

This was the first time since August 2013 that an officer with the Brooklyn Center police department has been involved in a shooting, the Star Tribune notes.

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