Illinois Supreme Court
Criminal Court
Probable Cause
Officer in unmarked car heard Defendant yelling "dro, dro" to a passing vehicle in front of Chicago Housing Authority building. Officer testified that based on his experience, "dro, dro" is slang for sale of cannabis. Facts known by police at time of arrest were sufficient to constitute probable cause, as police observed Defendant committing offense of solicitation of unlawful business, and location at known narcotics sales spot was one factor contributing to probable cause. (KILBRIDE, THOMAS, GARMAN, KARMEIER, BURKE, and THEIS, concurring.)