On the night of May 29, 1873, gang members Billy Woods, Bum Mahoney and Conroy's chief lieutenant Socco the Bracer stole a small boat from Jackson Street and sailed downstream along the
East River to Pier 27 where the brig
Margaret was docked and waiting to be loaded with cargo. The three men boarded the ship and, while searching a sea chest, they woke up the captain and his mate. A fight then occurred with the crew and "the gangsters severely beaten and driven over the side into their boat". The skipper had fired several pistol shots into the air to alert police and Patrolmen Musgrave and Kelly, patrolling the river in a rowboat, attempted to catch up with the fleeing pirates but lost them in the fog and darkness. Musgrave flashed a dark lantern out over the water, searching for any sign of the pirates, and saw a boat slowly pull out from underneath a nearby pier. Mahoney and Woods were both rowing while Socco the Bracer was "standing in the stern with a cocked revolver in his hand". Socco fired at the officer as soon as Musgrave shined his lantern at the pirates. When he missed his target, Mahoney and Woods stopped rowing and also began firing. A brief shootout ensued when police returned fire, Musgrave's first shot hitting Socco below the heart, and Mahoney and Woods "seized their oars and pulled rapidly mid-stream". They then tossed Socco overboard, hoping to lighten the weight of the small boat, but Socco was not yet dead and clung to the side. Through seriously wounded, the shock of the cold water had revived him. He tried to climb back into the boat, holding onto the
gunwale, and the pursuing officers could hear Socco begging his companions to take him back aboard. Woods suggested "they crack him on the knuckles and leave him to drown" but Mahoney relented and dragged him back into the boat. Socco died "before the craft had gone fifty feet" and Mohoney tossed his body overboard once more. The two men managed to escape but Socco's body turned up floating at the foot of Stanton Street "within sight of the dead gangster's home". ==Mattan robbery==