According to the Congolese government, the Swedish woman was kidnapped, along with an American UN colleague and four Congolese citizens. The Swede and the American were part of an expert group from the UN general secretariat which monitors the UN sanctions imposed on Congo's millitia.
According to a brief statement from the UN, the local UN Monusco force is engaged in the search operation, which is expected to continue on Tuesday, Voice of America reports.
The kidnapping is reported to have happened on Sunday in Congo's Kasai Central province. The country's government said the woman was on a moped taxi, which was stopped on a bridge, news agency AFP reports.
Swedish forces have been a part of all UN missions in Congo since the 1960s. It is also a significant participant in the country's development and humanitarian work.