BELGRADE, Serbia (AP) — Serbian police say they have arrested six people suspected of smuggling migrants across the border to Hungary and other EU countries.

The six face charges of illegally crossing the state border and people smuggling.

Police said Thursday that the suspects charged the migrants from 900-1,200 euros ($1,000-$1,350) for the illegal transfer. They say the migrants were from Kosovo, Asian and African countries.

Migrants fleeing war and poverty have turned to smugglers to help them reach wealthy European nations after Balkan countries closed their borders for the passage.