BELGRADE, Serbia (AP) Serbian police say they have detained hundreds of people in a massive sweep against drug traffickers throughout the Balkan country.

Senior official Milorad Veljovic says police on Friday searched more than 900 locations and seized various drugs, weapons and ammunition. Veljovic says soccer hooligans and extremists are among those arrested.

Serbia and other Balkan countries are considered to be one of the key transit routes for drug smuggling to Western Europe. Organized crime soared in the region following the wars of the 1990s.

Veljovic says at least 250 people will face criminal charges.