Cairo police arrested on Monday four of the rioters who were involved in the latest Mohamed Mahmoud St. and Simon Bolivar Square unrest. A garbage collecter was among the arrested. He confessed to setting fire to a police vehicle on Saturday and of taking part in previous unrest outside the scientific complex which was torched in December. Another arrestee was a vendor. He was busted by a police officer while sneaking into Lysee school after climbing a tree at Mohamed Mahmoud street to throw stones at police. A packet of cigarette was found in his possession containing hashish, cell phone and 285 EGP. A worker at a fuel station in Noubar street downtown also contacted the police to inform them that two men, both from Gharbiya, came to fill an empty bottle of fuel at the station. The two men were arrested by the police.