On the evening of 17 March 2012 (St Patrick's Day), along with two friends, Roberto Laudisio Curti consumed a quantity of LSD, which caused him to suffer from acute psychosis, manifesting as an array of delusional and paranoid behaviours.
During a struggle on the ground, tasers were used in drive-stun mode 7 times, and "at least some of the contents of each of three cans" of OC spray was discharged at Roberto's face.