The Food and Drug Administration on Wednesday appealed a court order directing the agency to make "morning-after" emergency contraception pills available without a prescription to all girls of reproductive age.

Lawyers with the Justice Department filed the appeal with the 2nd U.S. Circuit Court of Appeals in New York, according to court documents.

The appeal is the latest foray in the years-long legal battle over the pill known as "Plan B," a drug that has also sparked political and religious clashes. If taken up to 120 hours after unprotected sex, it is designed to prevent pregnancy.

The government is seeking to overturn U.S. District Judge Edward Korman's ruling from April 5 that required the FDA to make the emergency contraception available over-the-counter to women of all ages within 30 days.