Boston Police Commissioner Edward Davis and Suffolk County District Attorney Daniel F. Conley today announced the arrest of a suspect in the Oct. 7, 2007, murder of Shawndel Mitchell, 22, of Roslindale.Today, Oct. 31, 2007, the Boston Police Fugitive and Apprehension Team, with assistance from Transit Police detectives, arrested Saraaj Abdulnur, 19, of Roxbury at Commonwealth and Harvard Avenues in Brighton, MA. Abdulnur has been identified as the person responsible for the homicide of Shawndel Mitchell. As a result of an ongoing investigation by Suffolk prosecutors in the Special Grand Jury and Boston Police homicide detectives, investigators applied for and were granted an arrest warrant on October 10, 2007 charging Abdulnur with murder. Abdulnur’s arrest follows the arrests of Antwan Carter and Daniel Pinckney on Oct. 22 for the homicide of Cedrick Steele earlier this year and the Oct. 26 arrest of Lamory Gray for the homicide of Herman Taylor III in 2006. As with those homicides, Boston Police detectives and Suffolk prosecutors investigated Mitchell’s shooting death in close cooperation. On Sunday, October 7, 2007 at approximately 3:27am, officers from Area B-2 (Roxbury) responded to a radio call for shots fired in the area of 84 New Whitney Street. On arrival, officers located Mr. Mitchell suffering from an apparent gunshot wound to the chest. Mr. Mitchell was transported to Brigham and Women’s Hospital where he succumbed to his injuries and was pronounced. Abdulnur is expected to be arraigned tomorrow in Roxbury District Court.