All aircraft in Southern California were briefly ordered to ground at approximately 2:50pm today. The official cause is unknown but it may be due to North Korea’s projectile launch. North Korea appeared to test fire their second ballistic missile in less than a week. South Korea and Japan condemned the launch. APNorth Korea appeared to have launched their second ballistic missile in less than a week[/caption] South Korea’s Joint Chiefs of Staff said the suspected missile launch was detected around 7:27am GMT from an inland area of North Korea. Most read in World News DID SHE DO IT? 4 pieces of evidence that led jury to convict 'killer nanny' Louise Woodward FAMILY FORTUNES I gave my cousin a scratchard and he won £36,000… my wife wants it BACK NAME SHAME Dad gives son world's most ridiculous name & shows birth certificate to prove it GRUESOME BEATDOWN Brit reveals life in hellish Thai jail with horror shower attacks RUN FOR HIS LIFE Terrifying moment hiker is chased by a ferocious mountain lion HOUSE OF SIN Dull 5-bed home goes on sale for £590,000 - but it hides VERY raunchy secret More to follow… For the latest news on this story keep checking back at Sun Online. The-sun.com is your go-to destination for the best celebrity news, sport news, real-life stories, jaw-dropping pictures and must-see video. Like us on Facebook at www.facebook.com/TheSunUS and follow us from our main Twitter account at @TheUSSun. We pay for your stories! Do you have a story for The US Sun team? Email us at exclusive@the-sun.com or call 212 416 4552. Like us on Facebook at www.facebook.com/TheSunUS and follow us from our main Twitter account at @TheSunUS