CARACAS-- The presidents of Venezuela and Bolivia ramped up their anti-U.S.invective on Wednesday, claiming Washington was using a relief operation in Haiti to mask a military takeover of the impoverished country.

"The empire," said Mr. Chavez using his favorite epithet for the United States, "is taking Haiti over the bodies and tears of its people."

"They started with the airport," hesaid, referring to Port-au-Prince's single runway airfield, which U.S. forces have operated since last week, assisting hundreds of aid planes in landing.

"If you want to go inside the destroyed presidential palace, you'll find US Marines standing in your way," Chavez added.

On Tuesday, U.S.military helicopters landed at Haiti's presidential palace, which was largely destroyed in the 7.0 quake that struck on Jan. 12.

The United States on Wednesday said it would send 4,000 more troops to help quake-devastated Haiti, bringing the total number of US military either on the ground or on off shore ships to15,000 in coming days.

"They brazenly occupied Haiti without consulting the UN or the OAS (Organization of American States)," said Mr. Chavez, who on Sunday made similar accusations about the U.S. relief effort in Haiti.

Meanwhile, Bolivian President Evo Morales, one of Mr. Chavez's closest allies in the region, said Wednesday he would request an emergency UN meeting "to repudiate and reject this military occupation of the United States in Haiti."

"It's not right the United States should use this natural disaster to invade and militarily occupy Haiti," he told a press conference.

"If you have all these problems with the injured and the dead from the earthquake, you have to go there to save lives, and you don't do that from a military standpoint," he added.