Johannesburg - Police released more information about the man who was robbed, hijacked and stripped by armed men, who glued him to his exercise bike.

Kobus van Deventer, 50, was hijacked on Wednesday by an armed gang of four robbers who forced him to take them to his home in a suburb north of Johannesburg, SAPA news agency reported.

"The victim was then forced to strip, after which he was superglued to the seat of an exercise bicycle, his hands were superglued, as were his feet and then his mouth was superglued shut," said spokesperson for emergency rescue service Netcare 911, Mark Stokoe.

While in the house, the "nicely dressed" robbers helped themselves to the man's Chivas Regal whisky while ransacking the house stealing seven firearms in the safe, Krugerrands, jewellery and construction equipment worth about R500 000.

Van Deventer told a newspaper on Friday in an interview that it had never crossed his mind that he would end up being superglued, saying he had feared that he was going to be gang-raped.

The asthmatic property developer was only rescued from the bicycle by his wife, Elmarie, when she returned from work five hours later.

"I couldn't believe it. I saw him sitting there on a bike trying to free himself. His eyes were popping out... He was red with sunburn and I thought he was having a heart attack," she said.

Chemicals were needed to help loosen the superglue.