The US State Department has said it is aware of reports that a US citizen had been detained in North Korea and it was in touch with the Swedish Embassy in Pyongyang on the issue.
"We are of course aware of the reports that a US citizen was detained in North Korea," a US State Department spokeswoman told a regular news briefing.
"We don't have additional information to share at this time. We have been in touch with the Embassy of Sweden about these reports."
The United States has no diplomatic relations with North Korea and the interests of its citizens in the country are represented by Sweden.
More top news
Two students and their climbing instructor are feared dead after an avalanche hit a school party in Japan.
The US has strongly condemned Russia's treatment of protesters after the largest anti-government protests in years swept the country.
Prosecutors in South Korea are seeking a warrant to arrest former president Park Geun-hye on corruption allegations.