At least two people have been gored and several more injured during the second running of the bulls in the northern Spanish city of Pamplona.
One person was gored in the arm at this year's San Fermin festival while the other was struck in the gluteus, Red Cross spokesman Jose Aldaba said.
The bulls from the ranch of Jose Escolar completed the 850m cobbled-street course in just over four minutes. Three minutes is considered average.
Two Americans and a Spaniard were gored on Friday's first running. All three were treated in hospital for non life-threatening injuries.
The nine-day San Fermin fiesta was made famous by Ernest Hemingway's 1926 novel The Sun Also Rises.