Honolulu Police closed several lanes on the H-1 Freeway in Aiea for about a half hour on Tuesday.
Police closed the three lanes prior to the Kaonohi overpass at about 10:15 a.m.
Police and Honolulu Fire Department crews were on scene.
The lanes were reopened shortly after 10:45 a.m.
At least 40 students got sick and 27 of them were taken to the hospital. Officials are now taking a look at what the kids ate for lunch.
An 18-year-old man was arrested in connection with the death of an elderly man in Chinatown.
A high school on Oahu has banned the popular kendama game.