BRUSSELS (Sputnik) — The border between France and Belgium has been closed and security measures have been increased at Belgian nuclear sites, local RTBF broadcaster reported Tuesday.
"The French-Belgian border has been closed, control has been increased at nuclear sites," an RTBF correspondent said.
The security alert has been raised to the top — fourth — level throughout the country following the blasts. Shortly after the airport blasts, explosions were also reported at the Maalbeek and Schuman metro stations in the Brussels city center.
Belgian intelligence had advance knowledge of plans to carry out terrorist attacks in the country but was unaware of their time or location, the French BFMTV reported Tuesday, citing police sources.