Police in Pennsylvania's state capital said a member of the leftist antifa group — known for assaulting supporters of Republican President Donald Trump at rallies across the country — was arrested after using a flagpole with a silver nail at the top to hit a state trooper's horse in the neck at a demonstration Saturday.

Authorities charged Lisa Joy Simon, 23, with aggravated assault to police, taunting a police animal, prohibited offensive weapons, obstruction to law enforcement function, resisting arrest, and disorderly conduct. She was arraigned and taken to Dauphin County Prison in lieu of $100,000 bail, WPMT-TV reported.

Harrisburg police said Simon was among antifa members protesting those marching against Islamic Shariah Law — an event that took place in more than 20 U.S. cities Saturday and drew similar counter-protests.

Shortly after 11:30 a.m. EDT, multiple mounted Pennsylvania State Police Troopers and Harrisburg police were attempting to control the crowd when police said Simon attacked a trooper's horse — named Sampson — with the flag pole.

State police told PennLive other protesters were seen carrying weapons such as sharpened bamboo poles and baseball bats.

Police said the horse was able to continue working with minimal injury. Pennsylvania State Police on Wednesday told TheBlaze the alleged attack was a "swipe" against the horse and that the animal's skin was not broken.

Here's what the South Jersey ANTIFA Facebook page had to say about the incident, according to WPMT:

A comrade was arrested while trying to demonstrate against an anti-Muslim rally in Harrisburg, PA. The charges are entirely fabricated and do not reflect what actually happened during the incident. The bail is set at an extraordinary $100,000. It is clear that this person is being held as a political prisoner, and we must make it known that we will not be intimidated by a militarized police, that we will remain resolute in standing by the values of our movement, and that we will continue to combat fascism wherever it attempts to spread.

A preliminary hearing is scheduled for July 6, the station said.

(H/T: Heat Street)