Guam's governor has described a series of bomb threats against schools and businesses in the territory as terrorism.
On Sunday, the territory's police responded to seven bomb threats made towards seven shopping centres, which saw thousands of people evacuated.
The Pacific Daily News reports that in the past month, there have been more than 50 bomb threats made towards local schools.
The governor, Eddie Calvo, called a news conference yesterday to say local and federal agencies were investigating the threats - all of which have turned out to be hoaxes - and anyone caught making them would be treated as a terrorist under the law.
The island's police chief Joseph Cruz said more than 10 minors and two adults have been arrested in relation to the series of bomb threats.