The North Korean flag is seen past a barbed-wire fenced wall of the North Korean embassy in Kuala Lumpur on March 5, 2017.
Song was detained on suspicion of "hostile acts" against the state, the North's KCNA news agency said.
Pyongyang University of Science and Technology is the country's only for-profit educational institution, Bloomberg reported. "When a USA citizen is reported to be detained in North Korea, we work with the Swedish embassy in Pyongyang", a State Department official noted in a statement to Reuters.
He worked at Pyongyang University of Science and Technology, the same workplace as another American, accounting instructor Kim Sang Dok, whose detention was announced on May 3. "When you are not credible about Syria, you're not credible about North Korea". The 62-year-old naturalized USA citizen, who has been held since October 2015, was sentenced to 10 years of hard labor.
The American who has been held the longest in North Korea at this time is Kim Dong-chul.
An ethnic Korean born in China in 1963, Kim studied agriculture at a Chinese university, but later studied theology in Los Angeles, California, between 1995 and 2005.
- Tony Kim, who also goes by his Korean name Kim Sang-duk, was detained April 22 at the Pyongyang airport.
Kim Hak-song's arrest comes as the already strained relationship between North Korea and the US continues to deteriorate.
China hopes to see improved contact between US, DPRK
The North Korean authorities detained a US citizen called Kim Hak-song on Saturday.
"This is the intent to openly threaten the DPRK [Democratic People's Republic of Korea]", state-run Rodong Sinmun stated in a commentary, carried by Korean Central News Agency.
What, if anything, the arrests have to the alleged plot is unknown.
The school - founded by evangelical Christians from overseas and opened in 2010 - is known to have a number of American faculty members. He was visiting the country on one of a handful of a guided tours organized by private companies where foreign tourists are chaperoned by North Korean minders and shown the country's good side.
Even so, it's expected that students report on their interactions with foreign staff.
The reported arrest of another "Mr. Kim" - the North Korean man allegedly at the center of the assassination plot - is more ominous. It yet again accused the U.S. of "igniting" a war against North Korea. No news came in or out.
Asked for her thoughts on Trump's remark that Kim Jong Un was a "a pretty smart cookie,"Rice replied: "Well, he is a smart cookie. he obviously knows what he's doing".
The school offers free education to children of the North Korean elite, many of whom would otherwise be sent overseas for school. Lim was sentenced in December 2015 to life in prison for harming the dignity of North Korea's leadership and trying to use religion to destroy its system.
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But they said in a statement the evidence includes surveillance video, witness statements and ballistics material. Police said the killings were unrelated to a series of 2015 freeway shootings in Phoenix that terrified drivers.
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Lookin At Lee, jockeyed by Corey Lanerie, made a late push and finished second after he came into the race with 33-1 odds. A post-race examination found no injury. "Thunder Snow was allowed to walk back to the barn and he did so comfortably".