Update, 12:18 p.m. Wednesday 

The Department of Veterans Affairs said in a statement Wednesday that health records show “a number of contacts” with Gavin Long from 2008 to 2013, and Long’s last known encounter with the VA was in August 2013.

The federal HIPAA law prohibits the department from disclosing additional information, the statement said. CNN reported Wednesday said that Long had suffered from post-traumatic stress disorder, citing a source involved in the investigation.

Original story: 

Gavin Long, the man who shot and killed three law enforcement officers and injured three others in Baton Rouge Sunday, told loved ones that he suffered from post-traumatic stress disorder, according to a report. The report said it is unclear whether Long had ever been diagnosed with the condition.

Long, a former Marine who had become increasingly outspoken after the death of Alton Sterling, had filled prescriptions to treat anxiety and insomnia, CNN reported Wednesday morning, citing a source involved in the investigation. 

Long served in the Marines from 2005 to 2010, reaching the rank of sergeant. He deployed to Iraq from June 2008 to January 2009, according to military records. He was awarded several medals, including one for good conduct, and received an honorable discharge.

Much about Long’s time in Louisiana remains unclear, and pressing questions remain about when the Kansas City man arrived in Baton Rouge and whether any of his local interactions presaged his ambush on law enforcement.

A video of Long on Plank Road in north Baton Rouge has surfaced since the shooting, showing Long promoting his self-help book and doling out unsolicited advice to strangers.

Read the full report from CNN here