It was at two o'clock on Saturday, when the couple was on their way home after shopping, as they noticed a car driving wobbly. They called the police and decided to drive after the car - even though it was a detour for them.

The car then parked in a parking lot in Kungsmarken in Karlskrona and out of it a man and a woman stepped out. The private individuals who drove after then went ahead and kept them until the police came to the scene.

Both the man and woman, who are in their 25s, appeared affected and arrested when police arrived at the scene shortly thereafter.

Found drug addict

After suspicion, the police later decided to do a house search in the man's home and then found both cannabis and tablets that the police suspect was intended to be sold.

The man is now being arrested on suspicion of drug offenses and drunken driving. Woman is suspected of minor drug offenses and drug possession.

Both the man and the woman were previously unknown to the police.

"Thanks to this couple who took the time to drive a detour to follow the car, we have now caught the eye of these people," says Magnus Hansson, preliminary investigator, Karlskrona police.