LOS ANGELES (AP) — A man pleaded guilty in Los Angeles Tuesday to making online threats to kill law enforcement personnel and others, including one internet post that led to the evacuation of a courthouse, federal prosecutors said Tuesday.

John Patrice Hale, 43, who used the online moniker “Frost K Blizzard,” entered his plea Monday to one count of making threats to injure in interstate commerce, the U.S. Attorney’s Office said.

Hale admitted making several threats online in May 2017 against a courthouse, a school and a private business.

“Our brotherhood will celebrate today when allah sets the explosives planted in Inglewood sheriff vehicles at Inglewood court,” he wrote on May 12. That post prompted the evacuation of the Inglewood Courthouse near Los Angeles.

Other threats made repeated references to ISIS, such as “Allah willing we will be able to take out as many officers that pull out your parking structure. It will be a plus to take part of your american school across the street. ISIS will have revenge today.”

Hale further admitted that he submitted bogus information to the FBI’s “Tips and Public Leads” webpage. In the submission, Hale falsely claimed that he knew a man who “would supply ISIS with explosives even planting them for them.”

Authorities have not uncovered any evidence linking Hale to international terrorism.

Investigators did not identify a motive.

Hale faces a maximum sentence of five years in federal prison. Sentencing is scheduled on October 29.