Police officers from Greece and other European Union countries took part in a four-day training seminar in Veria, northern Greece about dealing with hostage situations involving terrorists.

The seminar, which ended on Friday, was organized by the European Union Agency for Law Enforcement Training (CEPOL) and was attended by 29 certified negotiators from EU member-states, experts from the Federal Bureau of Investigation (FBI) of the US, Scotland Yard and French officers