Nuclear-armed North Korea revealed Wednesday that it has drafted a plan to strike the area near a major U.S. military base on the island of Guam with a barrage of missiles, state-run media said.

The North's official Korean Central News Agency, quoting a spokesman for the military's missile forces, said in a report that the country was seriously considering such a strike option after "frequent visits to the sky above South Korea" by U.S. strategic bombers in recent months.

"The KPA (Korean People's Army) Strategic Force is now carefully examining the operational plan for making an enveloping fire at the areas around Guam ... in order to contain the U.S. major military bases on Guam, including the Anderson Air Force Base," the spokesman was quoted as saying.