SABC radio reported that Evelyn Moloko, the victim's sister told the committee that Maki was killed on suspicion of having been involved in a handgrenade explosion in which some youths were killed in Duduza in 1985.
Moloko said her sister was burned to death with a tyre around her neck while attending the funeral of one of the youths.
Maki Skosana was the first victim of the so-called necklacings.
Her body had been scorched by fire and some broken pieces of glass had been inserted into her vagina, Moloko told the committee.
Moloko added that a big rock had been thrown on her face after she had been killed.