Marine Sgt. Eusebio Lopez was identified as the gunman in the deadly shooting at Quantico. Lopez killed himself after killing two other Marines, authorities say.(Photo Courtesy of CNN)
(CNN) -- They were all young Marines, all decorated with awards and all with seemingly bright futures ahead.
But their promise was cut short when one of them shot the other two and turned the gun on himself.
Late Saturday night, authorities released the names of the three Marines who were killed in the shooting at the Marine Corps base in Quantico, Virginia, last week.
Marine Corps officials say Lance Cpl. Sara Castromata, Cpl. Jacob Wooley and Sgt. Eusebio Lopez were killed in the Thursday night shooting.
Authorities said Sgt. Lopez was the gunman.
The shooting stunned the military community. It came as the Corps grieves another tragedy: the deaths of seven Marines in a training exercise in Nevada on Monday.
The Marine Corps detailed the careers of the victims and the gunman:
-- Lance Cpl. Sara Castromata, 19, of Oakley, California, served as a warehouse clerk. She joined the Marines in 2011 and was promoted to her current rank in February. Her awards include the National Defense Service Medal, Global War on Terrorism Service Medal and Good Conduct Medal.
-- Cpl. Jacob Wooley, 23, of Guntown, Mississippi, was a field radio operator. He joined the Marines in 2010 and was promoted in July. Wooley's awards include the Navy Meritorious Unit Commendation, Marine Corps Good Conduct Medal, National Defense Service Medal, Global War on Terrorism Service Medal and Sea Service Deployment Ribbon.
-- Sgt. Eusebio Lopez, 25, of Pacifica, California, was a tactics instructor at the base's Officer Candidates School and specialized as a machine-gunner. He joined the Marines in 2006 and received at least 10 awards, including the Combat Action Ribbon and the Humanitarian Service Medal. He had deployed in support of Operation Iraqi Freedom and in support of Operation Enduring Freedom.
The shooting remains under investigation by the Naval Criminal Investigative Service.