A former leader of a movement in Iowa City that identifies with the ideals of Black Lives Matter has been arrested for allegedly interfering in a homicide investigation, police said. Mazin M. Mohamedali, 20, was arrested Saturday, and faces one count of accessory after the fact, an aggravated misdemeanor, according to a criminal complaint filed in Johnson County District Court. His arrest follows a fatal shooting during a suspected robbery at his Iowa residence in February. Police say he failed to immediately call emergency services after the incident. He also later lied to investigators about the shooting’s circumstances and provided false descriptions of people involved, according to an affidavit filed by an officer. According to court documents, the 20-year-old also deleted his mobile phone’s call history and the mobile phone application Snapchat, and in doing so, hid information from police that would have led them more quickly to the suspect …