Andrew Marcus, the writer and director of Hating Breitbart, posted on Twitter that an anti-Trump protester punched a Donald Trump supporter Tuesday evening.

“100% confirmed! Anti-trump protester punches @realDonaldTrump supporter in face. Video coming. Stay tuned. cc @RebelPundit @gatewaypundit,” Marcus tweeted.

https://twitter.com/ImAndrewMarcus/status/714932325679808513

https://twitter.com/ImAndrewMarcus/status/714927151900925953

A cell phone video of the incident was posted by Rebel Pundit, in which it appears a female punches someone and then is sprayed with pepper spray as she flees.

The incident reportedly occurred before Trump’s campaign rally in Janesville, Wisconsin on Tuesday afternoon.