A gunman and an accomplice who killed a British oil executive on the streets of Brussels are still at large.
Nicholas Mockford, 60, was shot dead as he left a restaurant with his wife on 14 October.
Police in Belgium have appealed for witnesses to the incident, in which four shots were fired at Mr Mockford, who was employed by Exxon Mobil.
The BBC reports there has been some speculation Mr Mockford could have been deliberately targeted because of his job.
But Exxon Mobil has insisted the death was not linked to his work.