Relatives of the four people who were burnt beyond recognition after their shack caught fire in Alexandra in the north of Johannesburg Friday morning are blaming arson for the incident.

The victims aged between five and 29-years-old were asleep when their shacks caught fire. The shacks were erected inside a building used as a panel beating workshop.

Distraught relatives of the victims believe the panel beating workshop, in which the deceased died, was purposely set alight with petrol.

They claim an unknown person threw a petrol bomb inside the building just before midnight, which led to the blaze.

All the seven shacks which were erected within the building have been razed to the ground. Those who were lucky to escape the blaze – could only save a few of their belongings.

A police investigation is underway to determine the exact cause of the fire and to find and arrest whoever might be behind this.