Dutch police have arrested four men suspected of deliberately infecting homosexual men with HIV in the northern Dutch city of Groningen, Dutch news agency ANP reported Wednesday.

The suspects met in chat rooms on web and made dates with victims for sex parties. There victims were drugged with Gamma Hydroxy Butyrate (GHB), a neuroactive drug which make people high, and then injected with HIV-infected blood, according to police in Groningen.

One of the suspects had a large amount of GHB in his possession. The remaining three suspects also had quantities of the drug, police said Wednesday.

The police first received reports about the parties in June last year. The first victim filed a report in February. The suspects were all arrested in early May.

Source: Xinhua