Austrian intelligence is warning of at least 20,000 Muslim migrants near the Bosnian-Croatian border, who will try to break through the border in the next few days, "almost all of them armed with knives" which could lead to bloodshed.
In recent weeks, there have been a number of violent incidents between migrants trying to cross the border and the Croatian security forces after the migrants claimed they had received false information that Croatia was about to open the border and allow them to cross into European countries. Most of the migrants are from Pakistan, but there are also many Iranians, Algerians and Moroccans.