INTERNATIONAL: Dozens of victims from the fuel truck explosion that shook Haiti's second-largest city of Cap-Haitien were buried in a mass grave on Wednesday.

The death toll from Monday's blast has risen rose to 75, as doctors have scrambled to treat the wounded from an incident that officials say was made deadlier by residents approaching the vehicle in a desperate search for fuel.

Rescue workers have recovered 61 bodies at the site of the accident while a director of the city's main hospital has claimed a further 14 people had died while being treated for wounds.

On Wednesday, Haitian Prime Minister Ariel Henry declared a three3-day national mourning.

Monday night's major blast charred the facades of several homes and shops nearby, as well as destroying cars and motorcycles on the street.