Omar Mateen of Port Saint Lucie, Florida, came to the attention of federal authorities twice prior to being identified as the gunman in the Orlando nightclub mass shooting, a senior law enforcement source told The Daily Beast.
The senior law enforcement source reports that Mateen became a person of interest in 2013 and again in 2014. The Federal Bureau of Investigation at one point opened an investigation into Mateen but subsequently closed the case when it produced nothing that appeared to warrant further investigation.
“He’s a known quantity,” the source said. “He’s been on the radar before.”
Mateen was a U.S. citizen; his parents are from Afghanistan, CBS News reports.
The senior law enforcement source told The Daily Beast that Mateen was born in New York and was married for a time to a woman from New Jersey.
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