They are still looking for a second black man in his 40s, time will tell if this is really another suspect. Alexis appears to have been a Buddhist, at least attending Buddhist temple for a period of time.

Via WaPo:

The dead gunman in Monday’s shooting at the Washington Navy Yard is Aaron Alexis, 34, a Navy veteran and native of New York City, an FBI official said Monday afternoon.

Police say it is still unclear if Alexis acted alone, or how he accessed the tightly guarded Navy Yard. Authorities also are still searching for another possible suspect: a black man in his 40s with gray sideburns, wearing an olive-drab military-style uniform.

Alexis died at the scene of Monday’s shooting, in which at least 12 other people died. D.C. Mayor Vincent C. Gray said no motive is known.

FBI Assistant Director Valerie Parlave asked the public to call 1-800-CALL-FBI with any information about him: “No piece of information is too small. We are looking to learn everything we can about his recent movements.”

By Monday afternoon, a portrait of Alexis had begun to emerge. He left the Navy in 2011, and lived—at least until recently–in Fort Worth, Texas.

In Fort Worth, Alexis had become a familiar, if unusual, figure at a Buddhist temple.

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