by Charlotte Van Ouwerkerk and Sophie Mignon Agence France-Presse ROTTERDAM, Netherlands (AFP) – Dutch police Thursday released a van driver arrested over a suspected terror attack plot on a Rotterdam concert venue but stepped up inquiries based on a “concrete” tip-off from Spain. “The man was freed earlier this evening and is no longer a suspect in the investigation,” Rotterdam police said in a statement. It remained unclear whether the tip-off by Spanish officials to […]