DALLAS (CBSNewYork/AP) — The Army said Friday that a suspect in the deadly shooting of police officers in Dallas served in the Army Reserve for six years and did a nine-month tour of duty in Afghanistan.

CBS News confirmed that the suspect has been identified as Micah Xavier Johnson, 25. Johnson was killed by a robot-delivered bomb in a standoff with police in a parking garage where he had exchanged fire with officers.

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A law enforcement source tells CBS News that Dallas shooting suspect Micah Johnson had an SKS semi-automatic assault rifle and a handgun. He also also wore body armor. The SKS was originally manufactured in the Soviet Union but is popular with many gun enthusiasts around the world.

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The Army released a portion of Johnson’s service record. It said Johnson was a private first class and his home of record is Mesquite, Texas. His military occupational specialty was carpentry and masonry.

His service dates, as provided by the Army, were March 2009 to April 2015. The Army said Johnson deployed to Afghanistan in November 2013 and returned in July 2014.

For that he was given an Afghanistan Campaign Medal with campaign star. He also earned an Army Achievement Medal, an Army Service Ribbon and an Armed Forces Reserve Medal with “M” Device, among other standard awards for service.

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On Saturday, Johnson posted a video of people slaughtering dolphins to a Black Panther Facebook page, CBS News reported.

“Look at the joy on their faces,” Johnson wrote. “Why do so many whites (not all) enjoy killing and participating in the death of innocent beings?”

Johnson’s Facebook page has since been taken down.

Pastor Jeff Hood, one of the organizers of the downtown Dallas protest where five police officers were shot and killed, said he had never heard of Johnson.

Hood said he began screaming “active shooter!” at hundreds of fellow demonstrators once gunfire erupted at the march to protest the recent fatal shootings of black men in Minnesota and Louisiana.

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