When the capos arrived at the 20/20, Massino and Bonanno mobster Gerlando Sciascia and Frank Lino escorted them to the store room. As the men entered the room, Sciascia brushed his hand through his hair, giving the prearranged signal. Vitale and gunmen rushed out of the closet, with Rizzuto yelling "it's a hold up". Massino immediately punched Giaccone, knocking him to the floor, and also stopping Indelicato from escaping. Giaccone got up and tried to run out of the room, but was blocked up against a wall with Trinchera. The gunmen killed Giaccone with a volley of submachine gun fire. The three capos were unarmed, as was the rule when attending a peace meeting. Lino, who had escaped, was brought instead of Indelicato's son, but was quickly won over to Massino's side.