A group of four "nicely dressed" but armed robbers hijacked a man and forced him to take them to his home where they superglued him to an exercise bicycle and robbed. The man remained fixed on his bike for at least three hours until his wife returned back and called for help.

The strange incident happened with 50-year-old asthma patient Kobus van Deventer on Wednesday afternoon while he was driving his car through Johannesburg's northern suburbs.

According to a spokesman for Netcare, a private company which helped with Deventer's rescue from superglue, the attackers forced Deventer at gunpoint to take them to his home, where he was strip naked and superglued to the seat of an exercise bicycle.

"His hands were superglued, as were his feet and then his mouth was superglued shut," Netcare's Mark Stokoe told SAPA new agency. Deventer was rescued from the bicycle by his wife, Elmarie, who described her partner's condition at the time as bad.

"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.

Netcare officers used certain chemical to loosen the superglue.