CADDO PARISH, La. (KTAL/KMSS) – A Shreveport man is in jail after the Caddo Parish Sheriff’s Office says he planned to kill African Americans at the Caddo Courthouse.

According to CPSO, 41-year-old Patrick Duffy sent “numerous” messages on Facebook to acquaintances about his plan to “blow up” the courthouse in Shreveport and kill African Americans.

“Mr. Duffy was making derogatory threats, using racial slurs in the wording that he had in the messages that he was sending to other people,” said CPSO criminal investigator Sgt. Casey Jones. One of those people reported the threatening messages to authorities.

The sheriff’s office confirms Duffy’s criminal history dates back two decades, including a 2010 arrest on charges of manufacturing incendiary devices and aggravated arson. That arrest, Jones says, had deputies moving with extra urgency.

“After reviewing his history, we did have a little more consideration for the public’s safety, the safety of the courthouse and so we did take some more precaution and safety concerns in this matter.”

That included extra precautions when investigators executed an arrest warrant for Duffy at his Magnolia Avenue home on Monday night. Jones says they also searched the home, but found nothing that could be used to make a bomb or to cause an arson.

Duffy was booked into the Caddo Correctional Center on one count of communicating false information of a planned arson and one count of hate crime.

His bond is set at $50,000 for each charge.