Fifteen people aboard an Air Canada jet were injured after their flight encountered severe turbulence southwest of the islands early today. Four of the injured were treated at Oahu hospitals.

The Australia-to-British-Columbia flight was diverted to Honolulu where it landed at 1:10 a.m. Nine passengers and two flight attendants were treated for minor injuries and released. They were aboard the plane when the jet left Honolulu for Vancouver at 3:16 a.m.

But two other passengers and two other flight attendants were taken to two hospitals for further treatment. The four have since been released. The two passengers were expected to continue their journey to Vancouver later today. while the two flight attendants were expected to leave tomorrow, according to an Air Canada news release.

The flight from Sydney, Australia had 256 passengers and 17 crew members, the airline said.

The Federal Aviation Administration said the Boeing 777-200LR encountered severe turbulence 100 miles southwest of Honolulu.