Jury selection is under way in the trial of a man charged with stabbing a fellow patron to death at a South Boston tavern, bringing the number of defendants in concurrent Suffolk County homicide trials to six.

BERNARD PISCOPO (D.O.B. 3/4/69) of Dorchester was indicted for the second-degree murder of 26-year-old Revere resident Adam Rich, who died of stab wounds sustained during a June 17, 2007, fight inside the 6 House on West Broadway. Piscopo is also charged with armed assault with intent to murder and assault and battery with a dangerous weapon for an attack on one of Rich’s friends, a 24-year-old Malden man, during the same incident.

Assistant District Attorney Holly Broadbent is prosecuting Piscopo’s case. The defendant is represented by attorney Robert George, with testimony expected to begin tomorrow or early next week in courtroom 817 of Suffolk Superior Court.

A different jury is currently weighing the fate of ANTWAN CARTER (D.O.B. 10/13/88) and DANIEL PINCKNEY, Jr. (D.O.B. 7/4/88), both of Boston’s South End, charged with first-degree murder and unlawful possession of a firearm in connection with the fatal shooting of 18-year-old Cedirick Steele on March 14. Steele was shot and killed in broad daylight as he stood across the street from Roxbury’s James P. Timilty Middle School waiting for his mother; testimony ended in that case on Monday.

Prosecution testimony is ongoing in the trial of ALEXANDER BOLLING, 24 (DOB 6/17/83), of Mattapan and TANEIKA BRITT, 31 (DOB 9/25/76), of Taunton for the Roxbury shooting deaths of Jessie Calhoun and Robert Turner on the morning of Aug. 2, 2007. Both defendants are also charged with armed assault with intent to murder for the non-fatal shooting of a 27-year-old male in the same incident.

Prosecution testimony is likewise ongoing in the re-trial of JOSEPH COUSIN (D.O.B. 8/9/84), charged with first-degree murder, receiving a stolen motor vehicle, unlawful possession of a firearm, and unlawful possession of a sawed off shotgun, all in connection with 10-year-old Trina Persad’s fatal shooting in a Roxbury park on June 29, 2002.