Serbian police have dispatched hundreds of officers to a border area with Hungary after a shooting between migrants resulted in three deaths and one injury. The incident occurred near the Serbia-Hungary border, where reports of violence and gun battles have become common. Thousands of migrants have been camping in the area, attempting to cross into EU member nation Hungary with the help of people smugglers. Police actions are aimed at curbing irregular migration and increasing security in the region. Several have been detained, including individuals suspected of smuggling migrants.