A fire erupted in a ship parked at plot 60 on Thursday at the Gadani ship-breaking yard in Hub.
According to rescue sources, labourers are still trapped inside the ship. Rescue and fire fighting teams reached the site.
Earlier, in November at least 26 people lost their lives and more than 50 others were wounded in the incident when a gas cylinder exploded and started a fire inside an oil tanker at the Gadani yard.
A high-level committee was also formed by the Prime Minister Nawaz Sharif to investigate the causes of the fire.