Saudi-led coalition aircraft have carried out fresh air strikes on Yemen's capital, Sanaa, hours before a five-day ceasefire is set to begin.

Rebels in Yemen say they will respond "positively" to a ceasefire offer by the Saudi-led coalition that has been carrying out air strikes against them.

Yemen's rebels fire rockets into Saudi Arabia, killing at least three people and purportedly capturing five soldiers in an attack showing insurgents' ability to launch assaults.