(Davenport, IA) -- The suspect in a recent Fort Dodge murder is arrested in the Quad Cities. Police say Davonquae Pettigrew was arrested in Davenport Saturday night. Pettigrew is one of two teenagers accused of killing 18-year-old Patrick Walker back on May 2nd. Haydin Mapel was arrested two days after the murder and is charged with aiding and abetting 1st-degree murder. Pettigrew is charged with 1st-degree murder and attempt to commit murder.