A Lawrence police officer shot a man while trying to stop him from beating another man with a baseball bat outside a nightclub early Monday, the Essex district attorney’s office said.
At about 1:15 a.m., Officer William Green was in uniform working a detail at Club Copa on Mill Street in Lawrence when he came across the beating in an alley adjacent to the building, prosecutors said.
According to the district attorney, Green told the man, later identified as Jose Concepcion, 26, of Lawrence, to drop the bat.
Concepcion continued to beat the other man until Green fired two rounds from his department-issued firearm and struck Concepcion in the chest, said District Attorney Jonathan W. Blodgett’s office.
Concepcion was listed in stable condition at Lawrence General Hospital, where he was arraigned on two counts of assault with intent to murder and two counts of assault and battery with a dangerous weapon, prosecutors said. He pleaded not guilty.
The 27-year-old beating victim was treated at Lawrence General and then transferred to Beth Israel Deaconess Medical Center in Boston with blunt-force trauma to his head and stab wounds to the torso.
Green was placed on administrative leave, per department protocol, the district attorney’s office said. He has been with the department for seven years.
Concepcion will return to court Dec. 5, said Carrie Kimball Monahan, spokeswoman for the district attorney.
Sarah N. Mattero can be reached at sarah.mattero@