A British man has been reported missing following the Brussels attacks and was thought to be on the Metro at the time of the explosion.
David Dixon, originally from Hartlepool in County Durham, has not been in contact with his partner, Charlotte Sutcliffe, since the terror attacks at Zaventem Airport's departure lounge and at Maelbeek Metro station on Tuesday.
He had been travelling to work but did not arrive at his office.
On Facebook, friends have been appealing for information of his whereabouts, asking anyone with information to contact Ms Sutcliffe.
Simon Hartley-Jones, who said he was a "very good friend" of the missing Briton, released a picture of him along with the caption: "He was in the metro system, he didn't arrive to his office and we still haven't reached him."
According to his Facebook page, Mr Dixon studied Economics at Newcastle University and used to work for British Airways.
Others reported missing include brother and sister Sasha and Alexaner Pinczowski from New York who were at Brussels Airport at the time of the explosions.
The first confirmed fatality was Adelma Tapia Ruiz, 27, a Peruvian mother of three-year-old twins.
The two explosions killed at least 31 people and injured 198, including two British nationals, according to reports.
