At least 14 people have been injured in a Pamplona-style bull run in Mexico.

The bulls charged and injured some of those in the crowd of runners as spectators looked on.

Two men with serious injuries were flown by helicopter to a hospital in Xalapa, a city near Xico where the festival takes place.

Twelve bulls are let loose during the annual festival and run for more than half a mile through the village's streets.