Jason Valentine (Photo: SLMPD)

ST. LOUIS (AP) — A St. Louis man was charged Thursday with making threats against police and the St. Louis City Justice Center on Twitter.

Jason Valentine, 35, faces 10 felony counts of making a terrorist threat, the St. Louis Circuit Attorney’s office said Thursday.

Valentine is being held on a $100,000 cash-only bail, according to the St. Louis Post-Dispatch, which did not specify which jail. It wasn’t clear from online court records whether he has an attorney or when his first court appearance would be.

Valentine allegedly tweeted about “Kill a pig Night” throughout December, the probable cause statement said, and that he threatened an explosion at the Justice Center on Wednesday.

“St. Louis City Justice Center Mysteriously Exploded 12/31/2014,” one tweet read, according to the statement. Another said, “New Years Eve Massacre Kill A Pig Night.”

Many of the alleged tweets mentioned Ferguson, a St. Louis suburb where an unarmed black 18-year-old was shot and killed by a white police officer in August. The incident spurred local and nationwide protests in the following months.

Prosecutors also said in the statement that Valentine’s tweets alluded to Vonderrit Myers, a black 18-year-old who was fatally shot by a white, off-duty St. Louis city police officer in October. Police contend Myers opened fire on the officer first, though Myers’ family has disputed that.

Valentine’s Twitter account has been suspended.