Rotterdam
RotterdamiStock

Dutch and German police have arrested five people suspected of preparing a terrorist act in the Netherlands, The Associated Press reported.

The arrests took place on Saturday, according to the report.

Dutch police said in a statement that four suspects were detained in Rotterdam and officers searched multiple locations.

The statement said the investigation would continue to determine the nature and scale of the alleged threat. It provided no details.

In neighboring Germany, police announced the arrest of a Syrian man suspected of involvement in preparations for a terror attack in the Netherlands, according to AP.

Police said the 26-year-old, who was not named, was arrested Saturday in the western city of Mainz following an extradition request from the Netherlands.

A statement from police said the suspect has neither an official residence nor a criminal record in Germany. The apartment where he was found was searched.

In September, the Netherlands raised its threat level to four on a scale that tops out at five following a double stabbing in Amsterdam’s main railway station.

The suspect in the stabbing, a 19-year-old from Afghanistan who holds a German residency permit, was shot and arrested by local police.

Later that month, Dutch police arrested seven men suspected of plotting to carry out a "major terrorist attack" at a public event using explosive belts and an AK-47 assault rifle.

September’s stabbing in Amsterdam followed a Taliban call for attacks on Dutch troops after far-right Dutch politician Geert Wilders organized a Prophet Mohammed cartoon competition.

Wilders, who is known for his anti-Islam rhetoric, cancelled the planned contest following death threats.