A 14-year-old boy has been arrested for threatening to carry out a mass shooting at an Amsterdam secondary school, which led to the premises being closed.

The Spinoza20first school reopened on Thursday but was closed on Wednesday because of the threat, forcing teachers to relocate school-leaving exams to another location.

The threat was made on Snapchat on Tuesday evening. “Tomorrow a shooting at the Spinoza? What out for people at the spinoza20first,” the threat said. “Between 13.00 and 14.00.”

The teenager is currently being held in custody while the investigation continues and no further information will be released, police said.

According to the Parool, one other school in the city, the Notenkraker primary school in Zuid, is closed on Thursday after a threat circulated on the school’s classroom app.

Several other schools in the city have also received threats, the paper said.