The Mozambican president has pledged support for the families of 73 people, including children, who were killed when a fuel tanker exploded in northern Mozambique.

President Filipe Nyusi said Friday that "tragedy has knocked on our door once again" in Tete province, where the accident happened Thursday. Nyusi was recalling a 2015 incident in Tete in which about 70 people died after drinking contaminated beer.

Nyusi said aid efforts must be "flexible" following the tanker fire in the town of Caphiridzange, according to the Portuguese news agency Lusa. More than 100 people were injured.

The explosion happened after a truck driver stopped to sell fuel to residents who gathered around the vehicle, according to Radio Mozambique. A government task force headed to the scene and an investigation was underway.