Updated: Law enforcement officials said Aaron Alexis, a former Navy reservist, allegedly killed 12 people Monday. He had been arrested previously on gun-related incidents. Friends told reporters that Alexis was a practicing Buddhist who spoke Thai.
Law enforcement officials told the AP that Alexis had been suffering from a variety of issues, including paranoia and a sleep disorder and had been hearing voices in his head.
The officials said that he had been treated since August by the Veterans Administration for his mental problems.