Wayne State University has identified the police officer shot Tuesday evening as Collin Rose. University officials also said they would hold an 8:30 a.m. press conference today to update his status.

Rose, 29, was a K-9 officer, who had was hired by the Wayne State police department in March 2011, the department said in an e-mail to reporters.

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Rose was shot in the head and was fighting for his life while undergoing surgery late Tuesday night at Detroit Receiving Hospital, police said earlier Tuesday.

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The suspect had been arrested.

The arrested man is believed to be the person of interest described on the university's website and linked to a blue mountain bike, which found at the scene of the shooting at 6:45 p.m. several blocks southwest of the WSU campus.

Rose was patrolling an area a few blocks off campus, near Martin Luther King Blvd. and Trumbull, when he stopped to investigate a man, Wayne State police chief Anthony Holt said. It was unclear whether the officer had responded to a 911 call, although a woman who said she witnessed the shooting also said she'd called 911 about a troublesome man on a bike.

The back-up officer enroute to the scene found the wounded officer on the ground, suffering from at least one serious gunshot wound, Holt said.