Mouldy tombstones atop a small hill in Sungai Buloh were bathed in sunlight as a lady in black pants and a colourful blouse, her grey hair a mark of her advanced age, hunched from one grave marker to the other.

Ignoring the scorching heat, Wong Sau Pong, 72, squinted, trying hard to make out the carved names of May 13 victims who were laid to rest after the 1969 tragedy.