The American Airlines check in desk at Brussels Airport suffered two large explosions this morning, followed by a further explosion at Maelbeek subway station. Local media are now confirming that the three explosions were the work of suicide bombers

Passengers ran for cover and evacuated the airport at around 8am local time (3am ET). The bombs ripped through check in desk four, which is used by American Airlines. One journalist, who was in transit at the airport, said he could feel the whole building move.

Reports also suggest that first there was a shot fired in the departure hall, then something was called out in Arabic, and only afterwards, two explosions rocked the facility.

Belgium's Interior Minister, Jan Jambon, said the country was on high alert for a possible revenge attack following the capture of 26-year-old Salah Abdeslam in a flat in Brussels on Friday. He said: "We know that stopping one cell can ... push others into action. We are aware of it in this case."

So far there have been 13 fatalities at Brussels Airport.

At around 9am there was another explosion at Maelbeek underground station close to the 'European quarter' home of the EU's government. Ten people are said to have been killed in that attack, and the whole subway has now been closed down.

Below: Badly damaged subway train:

Above: Smoke coming out of Maelbeek subway station. Below: Passengers escaping subway trains at Schuman Station:

Photos from Brussels Airport are below:

Above: Pictures from Brussels Airport. Below: Belgian Army has now been deployed to protect the nations capital: