Just watching this on france24.com and it is on reuters also.
"Federal prosecutors are taking the threats seriously, VRT said"
http://uk.reuters.com/article/uk-belgium-airplane-bomballert-idUKKCN10L233
"Federal prosecutors are taking the threats seriously, VRT said"
http://uk.reuters.com/article/uk-belgium-airplane-bomballert-idUKKCN10L233