Hundreds of migrants have entered Spain's North African enclave of Ceuta, with many swimming and using inflatables to cross from Morocco.
Others ran through a gate in the border fence.
The territory's leader, Juan Jesús Vivas, said the number of arrivals has been overwhelming resources and urged the Spanish government to intervene.
Spanish media estimated between 2,000 and 3,000 people entered Ceuta on Thursday, according to Reuters, but said that the Guardia Civil had not confirmed the figure.
Ceuta, on Morocco's northern coast, has long been a focal point for migrants attempting to reach Europe.
