"As of right now, he has been placed in investigative detention," Lake Mary police spokesman Zach Hudson said.
Hudson said three parties were involved in the altercation.
The incident comes two months after Zimmerman, a neighborhood watch volunteer, was found not guilty of murder in the shooting death of Trayvon Martin in Sanford, Florida.
Hudson added that police are following procedure by placing Zimmerman in investigative detention.
"Anytime we have anybody suspected of doing anything, we place them in investigative detention until a complete investigation has been done," Hudson said.
Lake Mary is a suburb of Orlando near Sanford.