 Story highlights DeAngelo Lamar Davis, 31, charged in connection with the death 
 
 This is the fifth officer shot in the United States in less than a week 
 
 (CNN) A Detroit man pleaded not guilty Friday to murder charges and other offenses in connection with the shooting death of a Wayne State University police officer. Wayne State said none of the school's officers had ever died in the line of duty and it had been 36 years since an officer was wounded by gunfire. Police said Rose was stopping someone on a bicycle when he was shot once in his head. “I am saddened to report that a short time ago, Wayne State University Officer Collin Rose died from the gunshot wound he suffered while working in the line of duty yesterday evening,” Wayne State University President M. Roy Wilson said in a message to the campus community at 6 p.m. Wednesday. Please keep Collin and his fiancée and family in your thoughts and prayers. Rose was investigating car break-ins in Detroit's Woodbridge neighborhood. The suspect, who is not being named by the Free Press because he has not been formally charged, was arrested late Tuesday night. He was a 2010 graduate of Ferris State University and was one credit short of completing his master's degree in police administration at Wayne State. The New Baltimore Police Department, where Rose worked as a cadet in 2010, released the following statement: 
 
 "The New Baltimore Police Department was saddened to hear of Officer Collin Rose's passing this evening. Read or Share this story: http://on.freep.com/2fSJBNk
– A 29-year-old Wayne State University police officer who was shot in the head Tuesday night died Wednesday evening, WDIV reports. "This is a tragedy felt by all of us—Collin and his family and friends, his fiancée, and our campus and community," the Detroit Free Press quotes Wayne State president M. Roy Wilson as saying in a statement. Collin Rose is the first Wayne State officer to be killed in the line of duty. He was patrolling a neighborhood near the Detroit campus with his two police dogs when he stopped a man on a bicycle. It's unclear why Rose stopped the man, though a resident had called 911 about him earlier. According to CNN, Rose called for backup, which arrived to find him with a gunshot to the head. It's unclear exactly what happened during the shooting, and the gun used to shoot Rose still hasn't been found. Police quickly arrested a suspect who has yet to be charged. The suspect is a homeless man and regular in the area who pleaded guilty to assaulting an officer back in 2011. Rose had been on life support since surgery Tuesday. His family was with him when he died. Rose was one credit away from getting his master's degree and was supposed to get married next October. His police chief says he was an "outstanding, proactive officer." Rose was the fifth officer shot in the US in less than a week.