At least two people were gored Monday during the final day of the traditional running of the bulls in the Spanish city of Pamplona.
Officials identified the two as a Spaniard and a U.S. citizen.
During today's run, one bull who became separated from the pack turned and charged oncoming runners.
The running of the bulls is a tradition of Pamplona's San Fermin Festival. It dates back to the 16th century, when the best way to get bulls from outside the city to the bull ring was to herd them through the streets. Ernest Hemingway's 1926 novel "The Sun Also Rises" vividly portrayed the tradition.