A truck crowded with vendors heading to a market lost control and tipped over in Haiti's northern region Saturday, killing 18 people and injuring 28, authorities said.

The accident occurred when the truck swerved to avoid a motorcycle and turned over near the coastal city of Cap-Haitien, said Jean-Henri Petit, a coordinator for the Civil Protection Agency.

He said the truck also was carrying loads of charcoal and wood that the passengers had planned to sell at a nearby market.

Petit said the 28 injured were all hospitalized, but no details were available on their conditions.