War Sirens In North Korea - Video

Posted a couple of hours ago to Twitter:

[link to twitter.com (secure)]

Translations of some of the tweets:

"North Korea's Army went to war.
In pyongyang, the capital, sirens.
Going public bomb shelters. "

"China's army has closed the border in North Korea.
All Chinese army air force and Navy to the State of war.
Border villages emptied."

Veracity unconfirmed.