Italy ordered the reintroduction of border checks at its ports and airports with Spain on Friday, and France announced it would increase fivefold the officers deployed at its land border from Saturday, after tens of thousands of people entered the Spanish enclave of Ceuta irregularly from Morocco.

Thousands of migrants streamed across from Morocco into the tiny Spanish territory of Ceuta on Thursday.

Thousands of migrants entered Spain's North African enclave of Ceuta from Morocco Thursday, as local officials called for a national emergency and...