Mr Teo was outside the stall when the fire broke out. According to him, a wok of hot oil was on the stove with the flame turned off at the time.
When CNA visited the hawker centre on Wednesday, their stall and the four adjoining stalls in the same row remain closed as the hawkers await checks on their electrical circuits and ventilation systems.
There were soot marks around the stove, and fridges and shelves were cleared of the usual ingredients and utensils with which the couple plied their trade.
Burn marks were still visible on the ventilation system at the ceiling of the affected section.
