Mateen altered looks, researched anti-psychotic drugs before attack
Mateen said he was worn out from staying up all night to research psychiatric medication, although he did not say he was taking specific drugs.
Hed been real worried about whether or not hed slipped into psychosis," the acquaintance said. He wasnt as friendly. He was obsessed with researching medication online.
The acquaintance said he thought it was strange that Mateen would confide to him his concerns about his mental health, because they were not very close and he did not know anything about Mateen's personal life, including whether he was married or had children.
"The last month, he looked worried, he looked upset, he looked confused," the acquaintance said. "He didnt seem himself."
In the early morning, about 18 hours before the June 12 attack, the acquaintance said he drove up to the gate but Mateen was not there to open it as usual.
In a couple of minutes, he appeared, silent and with a completely transformed look - a shaved head and face, without his usual short whiskers and glasses.
When asked if he was OK, the usually polite Mateen responded: Whats it to you, anyway?"
http://www.reuters.com/article/us-florida-shooting-mateen-idUSKCN0Z82LH