Another American citizen has been detained in North Korea — here’s what we know

North Korean leader Kim Jong Un waves during a military parade on Saturday, April 15, 2017, in Pyongyang, North Korea to celebrate the 105th birth anniversary of Kim Il Sung, the country's late founder and grandfather of current ruler Kim Jong Un. (AP Photo/Wong Maye-E)

PYONGYANG, North Korea — North Korea has detained a U.S. citizen, officials said Sunday, bringing to three the number of Americans now being held there.

Videos by Rare

RELATED: It’s not just the U.S. anymore — even Australia has North Korea making nuclear threats

Tony Kim, who also goes by his Korean name Kim Sang-duk, was detained on Saturday, according to Park Chan-mo, the chancellor of the Pyongyang University of Science and Technology.

Park said Kim, who is 58, taught accounting at the university for about a month. He said Kim was detained by officials as he was trying to leave the country from Pyongyang’s international airport. A university spokesman said he was trying to leave with his wife on a flight to China.

The Swedish Embassy in Pyongyang said it was aware of a Korean-American citizen being detained recently, but could not comment further. The embassy looks after consular affairs for the United States in North Korea because the two countries do not have diplomatic relations.

The State Department said it was aware of the report about a U.S. citizen being detained, but declined further comment “due to privacy considerations.”

Park said Kim had taught at the Yanbian University of Science and Technology in China before coming to Pyongyang. He said he was informed that the detention had “nothing to do” with Kim’s work at the university but did not know further details.

In this May 9, 2016 file photo, North Korean leader Kim Jong Un listens during the party congress in Pyongyang, North Korea. Since North Korea’s latest nuclear test, Pyongyang and Seoul have been openly trading threats of decapitation strikes and annihilating capitals populated by millions of civilians. And the talk of how each side might throw that first pre-emptive punch has become more detailed than ever. (AP Photo/Wong Maye-E, File)

As of Sunday night, North Korea’s official media had not reported on the detention.

The Pyongyang University of Science and Technology is the only privately funded university in North Korea. It held its first classes in 2010. It is unique in the North for its large number of foreign staff.

Colin McCulloch, the director of external affairs, said the university was not under investigation and was continuing its normal operations. He said he could not immediately confirm Kim’s hometown.

Though no details on why Kim was detained have been released, the detention comes at a time of unusually heightened tensions between the U.S. and North Korea. Both countries have recently been trading threats of war and having another American in jail will likely up the ante even further.

FILE – In this July 27, 2013, file photo, North Korean soldiers turn and look towards their leader Kim Jong Un from a military parade vehicle as they carry packs marked with the nuclear symbol during a ceremony marking the 60th anniversary of the Korean War armistice in Pyongyang, North Korea. Mark up another first for North Korea – two nuclear tests in one year. With few other options, or allies to rally behind it, this is how Pyongyang likes to play its cards in the power game that is northeast Asian politics. The question is whether it can play them well enough to get what it really wants: international recognition, security guarantees and, at the most fundamental level, its own continued survival. (AP Photo/Wong Maye-E, File)

Last year, Otto Warmbier, then a 21-year-old University of Virginia student from suburban Cincinnati, was sentenced to 15 years of hard labor in prison after he confessed to trying to steal a propaganda banner.

Kim Dong Chul, who was born in South Korea but is also believed to have U.S. citizenship, is serving a sentence of 10 years for espionage.

RELATED: Vice President Pence has responded to North Korea’s failed missile launch with a reminder of freedom and sacrifice

Another foreigner, a Canadian pastor, is also being detained in North Korea. Hyeon Soo Lim, a South Korean-born Canadian citizen in his 60s, was convicted and sentenced to life in prison in 2015 on charges of trying to use religion to destroy the North Korean system and helping U.S. and South Korean authorities lure and abduct North Korean citizens.

What do you think?

Senior citizens react to Coachella — and they’re nowhere near as cynical as you’d think

The nanny of former Spice Girls singer Mel B has come forward with her own claims about their alleged sex life