Yemen's warring sides have agreed to a two month ceasefire which comes into effect on Saturday, the UN envoy to the country Hans Grundberg said late on Friday.

"I would like to announce that the parties to the conflict have responded positively to a United Nations proposal for a two-month Truce which comes into effect tomorrow 2 April at 1900hrs," Mr Grundberg said in a statement.

"The parties accepted to halt all offensive military air, ground and maritime operations inside Yemen and across its borders," said the top UN official.

(With input from agencies)