Reasonable Suspicion Of A DUI Justifies A Detention To Determine If There Is Probable Cause For A DUI Arrest October 16, 2019 By Samuel Partida, Jr.People v. Nicolosi, 2019 IL App (3d) 180642 (September). Episode 691 (Duration 6:50) Trial judge grants the motion to suppress appellate court comes back and says there was PC for the DUI arrest.