Attacks on Brussels airport, metro kill 34 ....

BRUSSELS, March 22 (Reuters) - Thirty-four people were killed in attacks on Brussels airport and a rush-hour metro train in the Belgian capital on Tuesday, according to public broadcaster VRT, triggering security alerts across Europe and bringing some cross-border traffic to a halt.
A witness said he heard shouts in Arabic and shots shortly before two blasts struck a packed airport departure lounge at Brussels airport. The federal prosecutor said one of the explosions was probably triggered by a suicide bomber.The blasts occurred four days after the arrest in Brussels of a suspected participant in November militant attacks in Paris that killed 130 people. Belgian police and combat troops on the streets had been on alert for reprisal but the attacks took place in crowded areas where people and bags are not searched.
All public transport in Brussels was shut down, as it was in London during 2005 islamist militant attacks there that killed 52. Authorities appealed to citizens not to use overloaded telephone networks, extra troops were sent into the city and the Belgian Crisis Centre, clearly wary of a further incident, appealed to the population: "Stay where you are."
British Sky News television's Alex Rossi, at the airport, said he heard two "very, very loud explosions."
"I could feel the building move. There was also dust and smoke as well...I went towards where the explosion came from and there were people coming out looking very dazed and shocked."

VRT said police had found a Kalashnikov assault rifle next to the body of an attacker at the airport. Such weapons have become a trademark of Islamic State-inspired attacks in Europe, notably in Belgium and France, including on Nov. 13 in Paris.