STAMFORD \u2014 A city man is facing a felony assault allegation for an attack that left a 27-year-old victim suffering from a serious brain bleed, police said. Antonio Hernandez-Alvarez, 27, turned himself into the Stamford Police Department on a second-degree assault charge Thursday. Capt. Richard Conklin said Hernandez-Alvarez was involved in a \u201clarge fight\u201d at the Riviera Maya restaurant and bar, 20 Summer St., on June 13. During the fight, Hernandez-Alvarez allegedly knocked out a 27-year-old man with a blow to the head, leaving him with a brain bleed, Conklin said. Conklin said Hernandez-Alvarez fled the scene before police arrived. Surveillance footage from restaurants in the area, as well as a nearby parking garage, helped police identify a profile for the suspect in the attack, Conklin said. On Sept. 19, an officer on patrol recognized a man fitting the description of the suspect in downtown Stamford. The man identified himself as Hernandez-Alvarez and agreed to a later interview with investigators. During the interview, Hernandez-Alvarez confessed to be involved in the June 13 melee, Conklin said. Hernandez-Alvarez was released after posting $40,000 bond following his arrest Thursday. He is scheduled to be arraigned in court on Nov. 4.