Warplanes from the Saudi-led coalition struck Sanaa's international airport this morning, shortly after authorities in the rebel-controlled Yemeni capital said it would reopen to receive humanitarian aid.

The runway was hit by two missiles, witnesses said.

Yesterday, the civil aviation authority in Sanaa announced it would temporarily reopen the airport, which has been targeted frequently by air strikes.

Earlier this morning war planes hit a nearby airbase, following a night of intensive bombardment of Shia Huthi rebel positions in their northern stronghold of Saada.

Saudi Arabia yesterday announced a humanitarian ceasefire in Yemen starting 12 May.

It has vowed to step up retaliatory strikes on the rebels, which it accuses of launching cross-border attacks on the kingdom.