North Korea confirmed Thursday that it is preparing to indict an American who was reportedly arrested for proselytizing.

Jun Young Su has been held since November last year, the North's official Korean Central News Agency said. The report did not state what crime he was accused of, but South Korean media have reported an American was detained for spreading Christianity. He is the latest U.S. citizen to be detained in the reclusive communist state in recent years.

North Korea informed Washington of the detention and Jun has been given access to Swedish Embassy officials in Pyongyang, the news agency said.

Earlier this week, the U.S. State Department called for North Korea to release one of its citizens and said Swedish officials had visited the American. But it gave no further details. The U.S. — which fought on South Korea's side during the 1950-53 Korean War — doesn't have diplomatic staff inside North Korea and Sweden handles Washington's interests there.