THE HAGUE, Netherlands (AP) — A Dutch judge is extending by two weeks the detention of a 26-year-old man who allegedly threatened to attack the organizer of a Prophet Muhammad cartoon contest.

Prosecutors said in a statement Thursday that an investigating judge ordered the suspect held while he is investigated on charges of making a terrorist threat, making preparations for a terrorist murder and incitement.

The man, reportedly a Pakistani citizen, was arrested Tuesday in The Hague on suspicion of terror offenses after he allegedly posted the threat, in Urdu, on Facebook a day earlier. Prosecutors say he was not armed.

The upcoming contest is being organized by anti-Islam lawmaker Geert Wilders. It has sparked protests in Pakistan. Physical depictions of the prophet are forbidden in Islam and deeply offensive to Muslims.