A head-on collision shut down a major Windward Oahu highway for hours and sent seven people to the hospital, three in serious condition.

• The crash happened in the afternoon near Kualoa Ranch on Kamehameha Highway.
• Seven people were hurt; three were seriously injured, including two women and a man, while four others had minor injuries.
• All seven were taken to the hospital for treatment.
• Police kept the highway closed for close to two hours while they worked the scene and have not yet said what caused the crash.

Outlook: The highway has reopened and police are expected to release more details on the cause as the investigation continues.