Charges have been filed against black teens believed to be part of a group involved in four downtown robberies

Police say that the black teens were part of a mob of between 15 and 20 men and boys connected to four attacks. Dvonte Sykes, 17, and two 16-year-old males were charged with felony counts of robbery and mob action after a man was knocked off his bike, then punched and robbed. His cell phone and camera were stolen. Trovolus Pickett, 17, and Derodte M. Wright, 18, were charged in connection with an attack that happened earlier in the evening.