The move is seen as part of Ukraine's efforts to reinforce its army as soldiers struggle to hold positions against Russia
Five United Nations staff have been abducted in southern Yemen while returning to Aden after a field mission, the United Nations said on Saturday.
The staff were abducted on Friday in Abyan governorate, said Russell Geekie, a spokesman for the top UN official in Yemen.
"The United Nations is in close contact with the authorities to secure their release," Geekie said.
Yemen's internationally recognised government, which is based in south Yemen, was working to safely free the UN staff abducted by unknown gunmen, the official news agency on Saturday cited a cabinet statement as saying.
An official at the UN office in Aden told Reuters that four of those seized were Yemeni nationals.
Yemen has been mired in violence since the Iran-aligned Houthi movement ousted the government from the capital, Sanaa, in late 2014, prompting a military coalition led by Saudi Arabia to intervene months later.
Among Yemen's many destabilising forces are militant groups Al Qaeda and Daesh that have in the past carried out attacks including in the south.
The move is seen as part of Ukraine's efforts to reinforce its army as soldiers struggle to hold positions against Russia
The Jamaican currently holds world records in the 100m, 200m and 4x100m with times of 9.58s, 19.19s and 36.84s respectively
Total property income posted year-on-year growth of 10% to $74m, highest value ever
All official donation channels however remain open through the outlets announced by government agencies
The Starlight Park is a four-building freehold community in Meydan
The 22-time major champion admits his farewell tour hasn't been as enjoyable as he would have hoped
Eating out, poor hand hygiene and erratic weather may be among causes, say medics
The goal-scoring striker is suffering from a muscle injury sustained during the Champions League quarter-final loss to Real Madrid