PAMPLONA, Spain (AP) — Spanish medical officials say at least four people suffered bruises but no one was gored in a fast, sixth running of the bulls at Pamplona's San Fermin festival.

Several of the bulls bumped into runners and trampled on others as they raced along the narrow street course to the bull ring.

Some 1,000 people took part in the 8 a.m. (0600 GMT, 2 a.m. EDT) run Tuesday, which lasted just over two minutes.

Navarra Hospital spokesman Dr. Jon Ariceta said first reports showed four people were hospitalized for bruises but none for gorings. There were no further details immediately.

The nine-day fiesta, which ends Thursday, became world famous with Ernest Hemingway's 1926 novel "The Sun Also Rises" and attracts thousands of foreign tourists.