Kabul: Four United Nations` employees were missing five hours after at least 14 people were killed in a multiple Taliban suicide attack on a popular restaurant in Kabul, UN officials said. "Four UN civilian personnel, who reportedly could have been present in close proximity to the scene of Friday`s (yesterday`s) attack in Kabul, still remain unaccounted for," UN spokesman Ari Gaitanis told. "The UN is making efforts to clarify the status of its personnel."