The epicenter of Saturday’s quake was 12 kilometers (7.5 miles) northeast of Saint-Louis-du-Sud at a depth of 10 kilometers (6 miles).
The earthquake left some 30,000 families homeless, according to the authorities.
The country, which has suffered huge devastation and tremors, has called for international help.
One of the world’s most deadly earthquakes in the last century occurred in Haiti on Jan. 12, 2010.
According to official figures, 316,000 people died and 300,000 were injured in the magnitude-7.0 quake that struck the south of the country.
Around 1.3 million people were left homeless in the aftermath.