Correctional Services spokesman Manelisi Wolela has denied allegations that student leader Mcebo Dla.
Pop star Shakira sold one of her bras for R23330 at a charity auction last Sunday.
The Latin beauty sold more than 40 stage costumes from her 2007 Oral Fixation Tour to raise funds for her Bare Feet Foundation, which is leading a project to build a school for impoverished children in her native Colombia.
Among other items up for sale on the eBay Giving Works website included a low-cut red dress with large, wing-like sleeves, a blue tank top bearing the slogan 'For Those Who Love to Rock', and a lavender skirt with turquoise and coral beading, which went for R7775.
One eager fan also spent R108860 on front seat tickets to a future Shakira concert in Toronto, Canada.
The auction has so far raised R590956, with two more autographed items still to be sold. Auctions for an electric Fender guitar and an acoustic Taylor guitar are due to close on Sunday. - Wenn