Brussels, March 22: Alert was raised in London, Frankfurt, Paris and other European Union (EU) cities following the blasts at the city's Zaventem Airport and a couple of metro stations, killing many and injuring several others.
Brussels attacked in retaliation for Salah Abdeslam's arrest?
Brussels attack: Shout heard in Arabic before blasts, says Belgian news agency
Brussels explosions: No Indian among casualties
Thirteen were officially killed in the airport blasts.
While Brussels's public transportation was shut as a result of the attacks, other European countries also took care of their people visiting Belgium, of which Brussels is the capital.
According to a RT.com report, Greece's Aegean Airlines cancelled all their flights to Brussels till fresh notices were received. The morning flights, on the other hand, were diverted to Dusseldorf in Germany, a Reuters report said.
Meanwhile, the neighbouring Netherlands enhanced security at its borders and airports while Austrian authorities ordered to open a hotline to keep in contact with the country's citizens visiting Belgium.
Meanwhile, Belgian television reports said one of the blasts at the Brussels airport was carried out by a suicide bomber while three unused suicide belts were found by the police at the airport.