The Council on American-Islamic Relations has called for increased police protection of local mosques after letters that threatened the genocide of Muslims and praised President-elect Donald Trump were sent to several California mosques this week.

The letters were sent to the Islamic Center of Long Beach and the Islamic Center of Claremont, CAIR’s greater Los Angeles chapter said in a statement. The same letter also was sent to the Evergreen Islamic Center in San Jose, according to CAIR’s San Francisco Bay Area chapter.

The handwritten letter, which appears to have been photocopied, was addressed to “the children of Satan” and called Muslims a “vile and filthy people.”

“Your day of reckoning has arrived,” the letter states, according to CAIR-LA. “There’s a new sheriff in town — President Donald Trump. He’s going to cleanse America and make it shine again. And, he’s going to start with you Muslims.”

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