German Chancellor Angela Merkel says Austrian tragedy a 'warning' in migrant crisis

The "horrible" discovery Thursday of between 20 and 50 dead migrants on a truck in Austria is a warning to Europe to get to grips with the migrant crisis, German Chancellor Angela Merkel said.

"We were all shaken by the horrible news that up to 50 people died... although these were people coming to seek safety," Merkel said in Vienna. "This is a warning to work to resolve this problem and show solidarity".