A 16-year-old boy has been gored to death at a running-of-the-bulls festival celebrating the patron saint of a Spanish town, police said.

The youth was gored in the back while celebrating Saturday's Apostle James feast at Isso, 200 miles southeast of Madrid.

A police spokesman says he died hours later after two operations failed to repair massive liver injuries.

A 60-year-old man was also injured when he was gored in a leg.

Fiestas including bulls are common in Spain, and critics and aficionados alike often agree that security is lax at many small town bull runs.

That means almost anyone can participate, even if they're drunk or unfit.