A group of around two dozen people suspected to be migrants from Africa have arrived by boat on a Spanish beach and scattered among sunbathers.

Amateur video footage showed a black inflatable boat coming ashore in Cadiz, on the southern Spanish coast. As the boat pulled into shallow water, those on board leaped out and ran up the beach. One onlooker asked in an astonished voice, "What's going on?"

Carlos Sanz, who shot the video Wednesday afternoon while on vacation in Cadiz, said the group quickly vanished and police only arrived some time later.

Spanish officials couldn't immediately be reached after office hours.

Disembarkations by migrants on Spanish beaches aren't common but have happened before, especially at Spaintarget="_blank"'>