"While filming a planned stunt sequence on the set of the 'Gladiator' sequel, an accident occurred during which several crew members experienced non-life-threatening injuries," a spokesperson for Paramount Pictures was quoted by US media as saying.
"The safety and full medical services teams on-site were able to act quickly so that those who were impacted immediately received necessary care. They are all in stable condition and continue to receive treatment."
A total of six people received treatment for burn injuries, the report said, citing an individual with knowledge of the production. Four crew members remain in the hospital, while two others were treated locally and discharged.
The incident occurred towards the end of the shooting day on June 7 and none of the cast members suffered any injuries.
A US tabloid cited a source as saying that the crew members were injured in an explosion on the set. Although the cause of the blast is still unclear, onlookers speculated that a gas pipe rupture could have been the problem.
"Gladiator" won five awards at the 73rd Academy Awards ceremony, including Best Picture.