ANN ARBOR, Mich. -

Ann Arbor police have arrested three people in connection to the July murder of a University of Michigan medical student in the 200 block of North Ingalls.

Paul DeWolf, 25, was attending the Ann Arbor school on an Air Force scholarship. He was found slain July 24 at his off-campus apartment after failing to report for work at a hospital.

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The suspects have not been charged. Police say the suspects do not appear to have any prior affiliation with DeWolf, the University of Michigan or the U.S. Air Force.

In addition to his medical training and aspirations, DeWolf was an Air Force 2nd lieutenant.

"We're just very relieved that they have three suspects in custody at this time. We're very relieved that it's people that were not associated with the University of Michigan or the Air Force," said DeWolf's father, Tom DeWolf. "Paul didn't really have any enemies. I would say he was what I would call an 'includer,' he took everybody in, tried to pull out the best in everybody."