Thousands of migrants have entered the Spanish north African exclave of Ceuta by sea in recent days, officials said Thursday, with local television images showing them swimming around the frontier and running into the town. Hundreds of migrants entered the Spanish north African exclave of Ceuta on Thursday, AFP reporters saw, many of them having swum by sea around the frontier fence. Migration from Morocco into Spain's two north African territories, Ceuta and Melilla, has long been a politically sensitive issue between the two countries, as thousands cross the border at times. The president of Ceuta, Juan Vivas, said Wednesday that 1,500 migrants had come to Ceuta by sea in the past few days. The Spanish press on both sides of the political spectrum spoke of "thousands" more people entering Ceuta on Thursday.