More than 90 African migrants have been arrested attempting to cross from Morocco into the Spanish enclave of Melilla.
An estimated 500 people stormed the barbed wire fences that separate Africa from EU territory early on Monday. A hundred of the migrants reportedly entered the enclave.
Some were armed with sticks and stones. The Moroccan authorities say 13 members of their security forces were wounded in scuffles.
Spain is struggling to deal with the influx of people crossing into Spanish territory at Melilla and Ceuta, another Spanish enclave in Northern Morocco.
At least 14 migrants drowned on February 6 trying to reach Ceuta.