An American was gored in the leg and five other runners were injured Wednesday in the second-last running of the bulls at Pamplona's San Fermin festival, officials said.

One of the six bulls crashed into a group of runners close to a fence, goring the American in the thigh and lifting at least two of the runners in the air with his horns.

In a statement, the Navarra regional government identified the American as a 39-year-old with the initials M.L.O. and said his condition was not serious. There were no further details immediately.

The statement said four Spaniards and another American were also being treated in city hospitals for contusions suffered in the run. The Navarra Hospital had initially reported four injured.

More than 1,000 people took part in the 8 a.m. (2 a.m. EDT) dash with six fighting bulls and their accompanying steer along a 930-yard street course to the city' bull ring. The bulls then face matadors and almost certain death in afternoon bullfights.

The nationally televised run lasted 2½ minutes.

The nine-day fiesta, known also for its 24-hour street partying, became world famous with Ernest Hemingway's 1926 novel "The Sun Also Rises." It attracts thousands of foreign tourists.

Bull runs are a traditional part of summer festivals across Spain.

Twelve people, including four Americans, have been gored since the runs started July 7.

In all, 15 people have died from gorings at the festival since record-keeping began in 1924.