ANN ARBOR, Mich. -

A $10,000 reward is being offered to find who killed a University of Michigan medical student.

Ann Arbor police and the University of Michigan are offering the reward.

Tips can be called or emailed to 734-794-6939 or TIPS@a2gov.org.

Student, Air Force lieutenant found dead:

Paul DeWolf, 25, was found dead in his apartment on July 24. He had died from a single gunshot.

DeWolf failed to arrive for a scheduled assignment at the Veteran's Affairs Hospital, so it sent a colleague to the home to check on him, police said. That person discovered DeWolf had died.

DeWolf, a 2010 graduate of Grand Valley State University, was to graduate from the medical school next spring. He is from Schoolcraft.

DeWolf also was an active duty second lieutenant in the U.S. Air Force.

Jen Hemberg, who had known DeWolf since the fall of 2010 when they both began medical school, said he got along with everyone and loved making others laugh.

"Paul was one of those people that knew everybody and knew everything about everybody, because he liked being around people," she told AnnArbor.com.

DeWolf was a cross country and track standout at Schoolcraft High School.

Coach Dave Sanders said DeWolf had a bright future ahead of him.

"I feel a real sense of loss, but not just for me personally," Sanders told MLive.com. "Even more so for the people in his life that would have benefited from him achieving his dream and the contribution he was going to make to society and those around him."