A 28-year-old man was pulled alive on Monday from the rubble of a building four weeks after Haiti quake that killed more than 200,000 people.

The man, identified as Evan Muncie was found in the wreckage of a market where he sold rice, according to his family.

Doctors said he was suffering from extreme dehydration and malnutrition but did not have major injuries from being crushed.

He hadn't had anything in quite some time. He had open wounds that were festering on both of his feet, said Dr Mike Connelly at the University of Miami field hospital.

The discovery came nearly a month after the magnitude-7.0 earthquake that devastated Haitian capital Port-au-Prince on January 12.