A British man was among the 15 people who died in a bomb attack on a cafe in Marrakesh, Morocco on Thursday, the Foreign Office has said.
While it has yet to officially confirm the man's identity, he has been named by Moroccan officials as Peter Moss.
The website of the UK's Jewish Chronicle newspaper said Mr Moss, 59, was one of its former writers.
The Foreign Office said that next of kin have been informed and his family has been given consulate assistance.
No group has so far said it carried out the attack in the major tourist spot.
The Foreign Office is advising Britons to stay away from the area of the attack.
Foreign Office Minister Alistair Burt said: "An FCO [Foreign and Commonwealth Office] rapid deployment team arrived this morning to supplement our team in Marrakech.
"They are co-ordinating closely with the Moroccan authorities, including to determine whether other British nationals could be amongst the victims.
"The UK stands with Morocco during this difficult time. We stand ready to provide whatever support may be needed in forthcoming investigations, and will continue to support Morocco's important reform agenda."
The Jewish Chronicle said Mr Moss was an award-winning broadcaster, comedian and journalist; and the author of novels including The Singing Tree and The Age of Elephants.
It added that he was educated in north London, and a father of two.