The boy, who has automatic name suppression, sent threatening emails to several organisations including the Department of Corrections and Southland Boys' High School, police say.

A teenage boy has been arrested after a series of email bomb threats were sent to organisations and institutions across the country.

Police say the boy sent threats to educational and public sites across New Zealand.

The boy, who has automatic name suppression, sent threatening emails to several organisations including the Department of Corrections and Southland Boys' High School, police say.