US advises its citizens in Brussels to 'shelter in place'
The State Department could not verify a claim of responsibility by Islamic State for the attacks.
Policemen stand guard at the entrance of a security perimeter set near Maalbeek metro station, on March 22, 2016 in Brussels, after a blast at this station near the EU institutions caused deaths and injuries(photo credit: EMMANUEL DUNAND / AFP)ByMICHAEL WILNERUpdated: