<sod >Authorities have not released a statement confirming casualty figures but the VRT News quoted officials saying at leastÃÂÃÂ 13 had died and 35 were injured.< eod>< sod > Authorities have not released a statement confirming final casualty figures butÃÂÃÂ Maggie de Block, the health minister, saidÃÂÃÂ 11 people were killedÃÂÃÂ and 81 injured in twin explosions at the airport.< eod>