Sketch released in alleged Riverdale sex assaults

January 7, 2011 4:27:25 PM PST
A community alert has been issued in Riverdale after two 17-year-old girls told police they were sexually assaulted by a man while walking home from the bus Thursday.

Late Friday authorities released a sketch of a man the girls say assaulted them at gunpoint in a yard near 142nd and Halsted.