A California man has been charged with 10 felonies for allegedly mailing greeting cards threatening to shoot minority neighbors moving in.

The San Luis Obispo County district attorney’s office announced Tuesday that prosecutors had charged Richard Orcutt with eight counts of criminal threats and two counts of possession of an assault weapon, according to the Los Angeles Times. Prosecutors have also alleged four of the eight counts of criminal threats constitute hate crimes.

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The charges stem from May when Orcutt allegedly mailed the threatening greeting cards to new property owners in the California neighborhood where he has resided for 30 years.

Police say the cards contained messages threatening to shoot property managers and future tenants of certain racial or ethnic groups.

The envelopes reportedly had no return address and featured an American flag on the front.

Additionally, authorities found 37 firearms when they searched Orcutt's home late last month.

He was booked into the county jail but later released on a $500,000 bond. Orcutt faces up to 14 years and eight months in prison if convicted of the crimes.