Reward more than $32,000 for info on Sgt. Collin Rose's murder

- A Wayne State University police officer gunned down in cold blood and his killer is still on the loose.

So determined to find the person who shot and killed Wayne State Police Sgt. Collin Rose, the reward to find his killer was more than doubled by DTE Energy matching the $15,000 reward Friday.

"We're about the business of trying to find a cop killer," said Chief James Craig.

"As a public servant dedicated to the safety of the community, Sgt. Rose represented the best of us," said Michael Lynch, DTE chief security officer.

On Friday Crime Stoppers also added another $2,500 donations have already come from the Bureau of Alcohol, Tobacco and Firearms and Detroit Dog Rescue.

Rose, 29, was shot and killed nearly three weeks ago while investigating what's known as a "problem area" near the university's campus. The man who police thought pulled the trigger, DeAngelo Davis, was released and murder charges dropped, while the real shooter may be on the run.

"We did not in my mind lose ground," Craig said.

Police meanwhile released video of a suspect riding a bike around the time Rose was killed and Friday photos of that bike and black gloves that may belong to the suspects, along with a flashlight.

"I believe we will find him," Craig said.

Police continue to canvass the area and asking for more tips. Detroit police promise that the massive manhunt will not stop until Rose's killer is found.

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