Seaside Heights police arrested Ronald Ortiz-Magro after a Sept. 4 brawl that started on the boardwalk.
In an upcoming episode, the 24-year-old Bronx, N.Y., resident is taped fighting another man.
Senior Assistant Ocean County Prosecutor Hillary Bryce says the victim lost consciousness. Bryce says authorities are trying to determine whether it was an aggravated assault or simple assault.
Bryce says the victim's name is not being released at this time.
Fellow cast member Nicole "Snooki" Polizzi was punched in the face in a Seaside bar in August.
The show has been criticized for its portrayal of young Italian-Americans.
---
Information from: The Press of Atlantic City, http://www.pressofatlanticcity.com
