Montana Govenor Greg Gianforte was slated to hold an updated press conference sometime Tuesday, Aug. 5 to address the manhunt.

The Army veteran suspected of killing four people at a Montana bar last week was still at large Sunday and may still be armed after escaping in a stolen vehicle containing clothes and camping gear, officials said.

The mental health of suspected Montana gunman Michael Paul Brown, 45, declined significantly following the death of his mother, relatives said.