Police issue warning after letter bombs are sent to at least six firms

At least six companies in Amsterdam, Rotterdam and Utrecht have been sent letter bombs in the past few days and police are warning that there will probably be more to come. In all cases so far, the letter bombs failed to go off, but they could have caused serious injury, policy say. The recipients include an estate agents in Utrecht, petrol stations in Amsterdam and Rotterdam and a Mercedes dealership in Rotterdam. On Friday morning the Okura hotel in Amsterdam...