Richard Howitt, the Labour MEP for the East of England, was in one of the metro stations in Brussels hit by an explosion.
Mr Howitt was in the Maelbaek station 30 minutes before the suspected bomb exploded.
He says the European Parliament, which is nearby, is in lockdown.
There's been 2nd #Brussels bomb exploded at Maelbaek Metro station which I used 30 mins ago. I'm safe. Parliament rightly proceeds as normal
The European Parliament is in lockdown after bombs which are now said to be in 4 Metro Stations. We are inside but SAFE.On @bbc5live shortly
Norwich City striker Dieumerci Mbokani says he's lucky to be still be alive following Tuesday's terror attacks in Brussels.
Sniffer dogs and extra police will be on patrol at at Stansted Airport this weekend as officers attempt to reassure passengers.
Here's what you need to know if you're planning on travelling to Belgium.