As Trump sows, so shall he reap.

Police found an explosive device Sunday in the home of a 55-year-old Richmond, California man who allegedly threatened to harm the local Muslim community, according to a local report.

Police evacuated William Celli’s neighborhood when they found a device at his home on Sunday and detonated it, Bay Area TV station KPIX reported. Celli was arrested and booked into county jail on Sunday afternoon, according to the report.

KPIX reported a tipster told police Thursday that a man was making devices and threatening to harm Muslims. But while law enforcement said Celli’s statements attracted their attention, police wouldn’t elaborate on the threats, according to the report.

“We thank law enforcement authorities for their swift action and we will monitor this alleged case of domestic terrorism closely as it moves through the legal system,” said Zahra Billoo, executive director of the San Francisco Bay Area chapter of the Council on American-Islamic Relations.

Celli frequently posted on Facebook, where he appeared to align himself with Republican presidential frontrunner Donald Trump. In October, Celli wrote: “I’ll follow this MAN to the end of the world.”

More: Man Who’d ‘Follow’ Trump ‘To End Of The World’ Arrested In Anti-Muslim Plot