KUALA TERENGGANU, Malaysia: It was a shocking discovery no husband should undergo.

A lorry driver suspected his wife was having an affair. He caught her holed up in a house in Kuala Terengganu with her "boyfriend" and began to assault him.

It was then that he found out that his wife had been soliciting money for her sexual services.

In the incident on Saturday, a 42-year-old fishmonger sustained three stitches on his head after he was assaulted by the husband.

The man, from Kampung Maras, first hooked up with the woman in early January when she offered to have sex with him for RM50 (S$20.80).

The victim agreed, and together with a friend, met up with the woman, who agreed to have sex with both of them at a resort in Kampung Merang, Batu Rakit.

While the fishmonger paid her, police are not sure whether his friend was also charged for the service.

State CID deputy chief Superintendent K. Manoharan said the woman, who is in her 20s and from here, contacted the fishmonger again on Friday.

They agreed to meet for another session, this time in Pulau Duyong on Saturday.

Manoharan said the victim met her near a school in Pulau Duyong at noon and took her to a house in Kampung Pulau Kambing. He then paid the woman RM40.

Suddenly, the woman's husband, who had been monitoring her movements, confronted them.

The shocked fishmonger tried to explain that he wasn't aware that she was married but that was not enough to save him.

The lorry driver bundled him into his car and, on the way to the fishmonger's house, hit him several times on the head with a wrench.

The victim lodged a report at the Kuala Terengganu police station at 5pm.

He later received outpatient treatment at the Sultanah Nur Zahirah Hospital.

The 35-year-old lorry driver surrendered himself at the Manir police station at 5.30am yesterday.

Manoharan said the suspect was remanded for four days.

Police have classified the case as one of voluntarily causing hurt.