WASHINGTON (Reuters) - The United States and European allies cautioned in a joint statement on Monday that outside interference in Libya would worsen divisions in the country and slow progress in its political transition.

"We believe outside interference in Libya exacerbates current divisions and undermines Libya's democratic transition," the United States, France, Germany, Italy and Britain said in the statement issued by the U.S. State Department.

Earlier on Monday U.S. officials said Egypt and the United Arab Emirates were responsible for carrying out two series of air strikes against armed Islamist factions in Tripoli.


(Reporting by Lesley Wroughton; Editing by Eric Walsh)