It was last month that a man disappeared from a hotel near Saltkällan in Munkedal, according to P4 West. Police say they have searched with dogs and held about 100 hearings - but the man has not yet been found.

A few weeks later another man disappeared, this time from his home in Strömstad - and as late as this weekend a third man disappeared in Brastad.

- He was picked up by a car. Then he is without a trace after that, says Sten-Rune Timmersjö, head of serious crimes at the police in the West region, to P4 West.

Now the police are investigating a connection, especially between the disappearance in Munkedal and the weekend's disappearance in Brastad.

- There is reason and belief that they were acquainted with each other, and there are circumstances that make us investigate their disappearance as human trafficking, says Sten-Rune Timmersjö.

The police have no suspects yet and urge the public to contact the police on 114 14 if you have any tips.