A 17-year-old youth has been arrested in connection with the murder of a Polish man in an Amsterdam park at the beginning of March.

The victim died of his injuries after being stabbed in what police say appears to be a robbery gone wrong. The killing caused an outcry at the time because it took place in part of the Oosterpark known as a gay cruising zone.

The investigation into the suspect has widened to include possible other robberies in the area around the Oosterpark, police said.

Police are also trying to establish if the youth acted alone. Shortly after the attack, police said they were looking for a gang of four young men. The suspect was arrested several days ago and has been remanded in custody.

Detectives are also appealing for gay men who have been robbed or attacked in the Oosterpark to come forward as possible witnesses.