ST. MARYS, Kan. - The chairman of the U.S. House Committee on Veterans Affairs has requested medical records from the Department of Veterans Affairs for the former Marine who killed three law enforcement officers in Baton Rouge, Louisiana.

Florida Rep. Jeff Miller sent a letter dated July 21 to the VA requesting all medical records for Gavin Long, an Iraq war veteran. The Republican also asked for a briefing from VA staff on the VA services Long received.

Kansas Rep. Tim Huelskamp, a committee member, confirmed Monday the letter was sent last week.

Long's mother, Corine Woodley, told PBS' Tavis Smiley that her son had post-traumatic stress disorder and unsuccessfully sought the VA's help.

Woodley says the VA denied her son's request in 2013, on grounds that the disorder wasn't related to military service.