The Golden Mosque, a small, mostly black mosque in California’s coastal county of Orange, was targeted by an Islamic extremist with a violent history who went on a rampage in March.
He shot and killed at least 14 people before turning the gun on himself.
Now, authorities are investigating whether he was motivated by radical Islamist beliefs.
“We know he had radicalized himself, we know that he had a long history of domestic violence,” California Sheriff Tom Bosenko said.
“But we also know he was very disturbed by the fact that a majority of Muslims do not support his beliefs.”
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Bosenco said the shooter was motivated because he believed he was being targeted for the faith.
“He was very upset by the state of California, and the fact of the matter is that he felt he was targeted because he was Muslim,” he said.
The gunman is believed to have acted alone.
He was killed in a shootout with police.
He killed his wife and two children, according to authorities.
It is not clear whether the man had a criminal record.
A former neighbor told The Associated Press that the shooter had a “long history of mental health issues.”
He was diagnosed as bipolar and had attempted suicide at least four times.
The neighbor said the family had two young children.
The gunman’s family said he had no criminal history.
“This is the worst thing that ever happened to our family,” a neighbor told the AP.
The shooting at the Golden Mosque is one of a string of domestic attacks in California this year.
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