The man accused of shooting a 15-year-old boy in the neck on March 11 in Ypsilanti was arrested Sunday night and is awaiting arraignment, police said.

Marcus Walker

Eastern Michigan University Department of Public Safety officers apprehended Marcus Tyree-Lashawn Walker, 23, during a traffic stop Sunday, according to Ypsilanti police Detective Sgt. Troy Fulton.

Ypsilanti police put out a “Wanted” poster for Walker on Wednesday, three days after the boy was shot near the intersection of Armstrong Drive and Armstrong Court. Walker is expected to be arraigned at 1 p.m. Tuesday at the Washtenaw County Jail, where’s currently being held, Fulton said.

According to police, Walker is the only suspect in the shooting, which left the boy in serious condition at St. Joseph Mercy Hospital.

Police said Walker used a revolver to shoot the boy, but the reason behind the shooting isn’t clear.

Walker is currently on probation for a January 2011 conviction for assaulting, resisting or obstructing a police officer in Washtenaw County, according to state records.

Kyle Feldscher covers cops and courts for AnnArbor.com. He can be reached at kylefeldscher@annarbor.com or you can follow him on Twitter.