- North Korean plan is to send 12 rockets to strike US island of Guam
- Homeland Security says islanders will be immediately informed of threats
- All forms of mass communication to be used to disseminate information
Ms Jenna Gaminde, the Homeland Security spokeswoman, told a press briefing on Thursday that the residents would be immediately notified by the 15 All-Hazards Alert Warning System sirens, located in low-lying areas throughout the island, the Pacific Daily News reported.
Ms Gaminde's remarks comes after North Korea announced earlier on Thursday that the nation has a detailed plan for a missile strike near Guam, where about 7,000 US troops are stationed, using four intermediate-range ballistic rockets.
The plan calls for sending 12 rockets over Japan to crash in the waters about 30 miles from Guam, which is 2,100 miles east of the Korean peninsula.
"If you hear the sirens, tune into local media - radio, print, television - for further instructions," the spokeswoman added.