Richmond, December 22 (RHC)-- In Richmond, California, police have arrested a white man accused of building homemade explosive devices in order to bomb local Muslims.

William Celli was arrested after police said he threatened members of the Islamic Society of West Contra Costa County. Celli is a vocal supporter of Republican presidential candidate Donald Trump, who has called for banning Muslims from entering the United States.

In October, Celli posted on social media that he would "follow [Trump] to the end of the world."

The Council on American-Islamic Relations has released a new report finding a greater frequency of vandalism and other acts targeting mosques this year than in any other year on record. Of 71 incidents reported this year, 29 occurred after the November 13th attacks in Paris.