A Russian contractor and an Indian businessman have been kidnapped in Haiti, a spokesman for the UN mission there is reported as saying.
UN troops were sent to Haiti after Aristide was overthrown
Details are unclear, though it is thought they were captured separately. Neither has been named publicly.
The kidnappers have reportedly asked for a ransom for the Russian.
The UN contingent has been deployed in Haiti to try to maintain law and order amid increasing violence and after the president was overthrown last year.
The two hostages are the first foreigners reported to have been kidnapped since the exiled President Jean-Bertrand Aristide left the country in February 2004.
However there have been a number of cases of Haitians being abducted. A schoolteacher was reportedly seized on Wednesday.
Damien Anses Cardona, a spokesman for the UN mission, told the AFP news agency that the UN was not talking directly to the kidnappers.
The Russian hostage is said to work in air transportation, providing services to the 6,000-strong UN mission.
The Russian foreign ministry told AP news agency that Russian diplomats had travelled to Haiti to try to secure the hostage's release.
Little is known about the Indian.
Haiti is due to hold elections later this year - the first since Mr Aristide's government collapsed.