AlHijjah 03, 1436, September 17, 2015, SPA -- An estimated 5,400 migrants arrived in Croatia in the last 24 hours, the Red Cross said Thursday, with officials concerned that the country may become overwhelmed by a wave of asylum seekers seeking alternative routes to Western Europe, dpa reported. The Croatian Red Cross said it expects similar numbers to arrive over the next few days, state TV HRT reported, after buses drop them off near the border on the Serbian side. Croatia, Slovenia and Austria have begun scrambling to deal with the thousands of migrants it anticipates after Hungary sealed its border. The move rerouted the Balkan migration route for refugees fleeing countries such as Syria, Afghanistan and Iraq from Hungarian soil to its three EU partners.