A Transbrasil Airlines cargo jet trying to make an emergency landing crashed Tuesday in a crowded slum near Guarulhos International Airport, killing at least 10 people and injuring 80 others, officials said.

A Fire Department spokesman said rescuers sifting through the wreckage of houses destroyed by the plane feared the number of victims would rise.Hospital sources said at least 10 people died and 80 others were injured. Among the dead was a pregnant woman, but doctors operated and were able to save her baby, according to a spokesman at Tatuape Hospital. Rescue teams said the dead included the three crew members aboard the Boeing 707.