The United Nations is calling for the "immediate and unconditional" release of one of its staff members kidnapped in eastern Ukraine.
A United Nations office in Ukraine statement says it is deeply concerned one of its staff members is being held captive in Donetsk.
The statement says the United Nations has information the staff member is being "well treated". It did not supply any information on the circumstances surrounding the abduction including when or where it took place.
The United Nations is carrying out humanitarian operations in eastern Ukraine's Donetsk and Luhansk regions.
An estimated 9,000 people have been killed since April 2014, when pro-Russian separatists in Ukraine's east launched the rebellion against the Kyiv government.