The Belgium's Olympic champion claimed his first 'Monument' title by battling through early setbacks and keeping his cool in the velodrome finale.
The play is being staged in Flemish, with surtitles in French, at Nanterre near Paris this weekend.
Belgian authorities have detained a suspect who was driving with gas canisters in the back of his car, setting off a security alert in the centre of Brussels.
Van Avermaet showed the same finishing speed and tactical nous that won him Olympic and Classics glory last year.
One person has been killed and up to 20 others were injured after a passenger train derailed and flipped on its side near the Belgian capital Brussels.
Belgian police have detained three people in a series of anti-terror raids in the Brussels suburb of Molenbeek, where some of the Paris and Brussels attackers lived or transited
The eurozone will go ahead with its bailout programme for Greece with or without the involvement of the International Monetary Fund.
Former Belgium Prime Minister Guy Verhofstadt, who is also president of the Alliance of Liberals and Democrats for Europe (ALDE) group, declared that it is "time for change".
The Belgian government intends to check passengers on international trains and buses.
Deep in the caves of Goyet in Belgium researchers have found the grisly evidence that the Neanderthals did not just feast on horses or reindeer, but also on each other.