Gavin Grey: UK correspondent on the fallout from the fatal mass shooting in Austria - Heather du Plessis-Allan Drive

Ten people have been killed in a high school shooting in the Austrian city of Graz in the country's deadliest shooting attack since World War Two.

Dozens more have been injured.

A 21-year-old former student - thought to be the gunman - is also dead.

UK correspondent Gavin Grey says the area has been 'devastated' by this attack - and a three-day period of mourning has begun. 

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