Haitians adjusting to the sudden return of one exiled ex-president could soon have another on their hands.

HAITI'S Prime Minister Yvon Neptune declared a state of emergency, as rebels agreed to disarm and US and French troops staged a show of force in Port-au-Prince following deadly gun battles.

The US sent combat-ready Marines into Haiti’s capital and messages to rebel leader Guy Philippe, prompting him to announce his men would lay down their arms, signalling an end to a rebellion that claimed at least 130 lives.