Jackass star Bam Margera appears in court to deny punching brother

Bam Margera (Photo by Todd Williamson/Invision/AP, file)

Jackass star Bam Margera has surrendered to Pennsylvania State Police for allegedly punching his brother during an altercation four days earlier at their home in the Philadelphia suburbs.

Margera was arraigned and pleaded not guilty, according to his lawyer, Michael van der Veen.