By January 1930, Coll had formed his own gang and was engaged in a shooting war with Schultz. One of the earliest victims was Peter Coll, Vincent's older brother, who was shot dead on May 30, 1931, while driving down a Harlem street. Coll subsequently went into a rage of grief and vengeance. Over the next three weeks he gunned down four of Schultz's men. In all, around 20 men were killed in the bloodletting; the exact figure is hard to pin down as New York was also in the midst of the vicious Castellammarese War at the same time. It was mayhem on the streets of Manhattan, and the police often had difficulty in deciding which corpse belonged to which war.