A reserve officer with the Orlando Police Department was terminated Monday after he arrested two 6-year-old children last week without the proper approval, Chief Orlando Rolón said.

The 6-year-olds, one boy and one girl, faced misdemeanor battery charges but will not be prosecuted, Aramis Ayala, the state attorney who serves Orange County, Fla., said at a news conference on Monday.

The state attorney’s office never intended to prosecute the children, but could not dismiss the girl’s charges until Monday, Ms. Ayala said. The boy’s charges will be dismissed once his case number is assigned, she added.

“I refuse to knowingly play any role in the school-to-prison pipeline at any age,” Ms. Ayala said. “These very young children are to be protected, nurtured and disciplined in a manner that does not rely on the criminal justice system to do it.”