At least 15 people were injured in the dangerous events of Friday's San Fermin festival

3 Americans and 1 Canadian Among Those Gored in Pamplona's Infamous Running of the Bulls

Three Americans and one Canadian were among those gored in the San Fermin festival’s running of the bulls in Pamplona, Spain, on Friday.

According to NBC News, a total of seven men were gored by bulls and at least eight others were injured on the second day of the festival.

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Officials from Spain’s Navarra regional government said a 23-year-old Californian and a 55-year-old whose home state was not identified suffered minor injuries under their left leg and left arm, respectively. A 46-year-old man from Pensacola, Florida, was in “mild” condition after being gored in the groin.

The Canadian, a 48-year-old man, was in serious condition after receiving a four-inch wound that injured his scrotum and rectum.

According to the Associated Press, chaos ensued after a few of the six running bulls became separated from the pack and started charging everything and everyone in sight. The six bulls weighed between 1,170 and 1,430 pounds.