BATON ROUGE, La. (AP) – The man who killed two police officers and a sheriff’s deputy in Baton Rouge was a former Marine sergeant who served in Iraq and had no known ties to any extremist groups.

Gavin Eugene Long, whose last known address was in Kansas City, Missouri, carried out the attack Sunday on his 29th birthday. Police say he also wounded three officers before he was killed in the latest in a string of violent incidents involving police.

According to military records, Long was a Marine from 2005 to 2010 and rose to the rank of sergeant. He served in Iraq from June 2008 to January 2009, and records show he received several medals during his military career, including one for good conduct. Long, who received an honorable discharge, was listed as a “data network specialist” in the Marines.