| FILE - In this Feb. 16, 2012 file photo, North Korean leader Kim Jong Un walks past his uncle Jang Song Thaek, left, after reviewing a parade of thousands of soldiers and commemorating the 70th birthday of the late Kim Jong Il in Pyongyang, North Korea. North Korean state media say Kim Jong Un's uncle has been executed, calling the leader's former mentor "worse than a dog." The announcement on Thursday evening, Dec. 12, 2013, comes days after Pyongyang announced that Jang Song Thaek had been removed from all his posts because of allegations of corruption, drug use, gambling, womanizing and generally leading a "dissolute and depraved life." | 
PYONGYANG, North 
Korea     (AP) -- North Korea said Friday that it has executed Kim Jong 
Un's uncle, calling the leader's former mentor a traitor who tried to 
seize power and overthrow the state.
 
The 
stunning announcement came only days after Jang Song Thaek - long 
considered the country's No. 2 power - was removed from all his posts 
because of a long list of allegations, including corruption, drug use, 
gambling and womanizing.
 
In an unusually 
detailed announcement, the official news agency KCNA said Jang had been 
tried for "such hideous crime as attempting to overthrow the state by 
all sorts of intrigues and despicable methods with a wild ambition to 
grab the supreme power of our party and state."
 
It called him a "traitor to the nation for all ages" and "worse than a dog."
 
Kim
 Jong Un has overseen other high-profile purges since taking after the 
death of his father, Kim Jong Il, two years ago.  But none of the purges
 have been as public - or as close to home - as the downfall of Jang, 
who was seen as helping the younger Kim consolidate power.
 
Analysts
 have said that Kim Jong Un has acted swiftly and ruthlessly to bolster 
his own power and show strength, but there has been fear in Seoul that 
the removal of Jang and his followers could lead to instability or lead 
to a miscalculation or attack on the South. Jang had been seen by 
outsiders as the leading supporter of Chinese-style economic reforms.
 
North
 Korea has recently turned to attempts at diplomacy with South Korea and
 the United States. But tensions have remained high since Pyongyang 
threatened nuclear strikes on Seoul and Washington last spring, and warn
 that it would restart nuclear bomb fuel production.
 
There
 was no immediate word about the fate of Jang's wife, Kim Kyong Hui, the
 younger sister of Kim Jong Il. She was also seen as a key mentor to Kim
 Jong Un after her brother's December 2011 death.
 
The
 White House said it could not independently confirm reports of Jang's 
execution but it has "no reason to doubt" the report from the official 
Korean Central News Agency that it took place.
 
Patrick
 Ventrell, a National Security Council spokesman, said, "if confirmed, 
this is another example of the extreme brutality of the North Korean 
regime."
 
Ventrell said the U.S. was following developments in North Korea closely and consulting with allies and partners in the region.
 
The KCNA report called Jang a "despicable political careerist and trickster" and "despicable human scum."
 
It
 was also unusually specific and chilling in its allegations. For 
instance, the report said that at one point, Jang didn't rise and 
applaud his nephew's appointment to a senior position because he 
"thought that if Kim Jong Un's base and system for leading the army were
 consolidated, this would lay a stumbling block in the way of grabbing 
the power."
 
Jang was described earlier this 
week by state media as "abusing his power," being "engrossed in 
irregularities and corruption," and taking drugs and squandering money 
at casinos while undergoing medical treatment in a foreign country.