UN Secretary-General Ban Ki-moon condemned "in the strongest terms" the attack on civilians at the railway station in Kunming, expressing his hope that "those responsible will be brought to justice", according to a statement issued by his spokesman.
The secretary-general notes that there is no justification for the killing of innocent civilians and hopes that those responsible will be brought to justice.
The UN chief also expresses his condolences to the bereaved families and wishes those wounded a speedy recovery.
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Armed police have carried out a raid apparently linked to Wednesday's deadly terror attack in Westminster.
Cheryl Grimmer vanished from inside a beach shower block in Wollongong, Australia, in 1970, when she was just three.
Pc Keith Palmer was on the front line and because of his actions, the Westminster attacker was unable to kill anyone else.