The suspect is believed to be Robert Card, a 20-year US Army veteran from Bowdoin Center, Maine.
(according to Telegrams so take with grain of salt)
EDIT: Name confirmed by news.
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According to law enforcement, CARD recently reported mental health issues to include hearing voices and threats to shoot up the National Guard Base in Saco, ME.
Well under 1. In fact, this article is anti-semitic for distracting the world from Israel's ongoing security issues.
The author didn't condemn Hamas
Concerning.
Interesting.
Looking into it.