Here's the official announcement of Simon's death and Frank's injury from BBC Head of News, Richard Sambrook:

We have had to confirm some very bad news this evening. Frank Gardner and freelance cameraman/journalist Simon Cumbers came under fire from gunmen in a suburb of Riyadh. Simon was killed. Frank has been injured and is being treated in hospital in Riyadh. Their families have been informed and we are offering them all the support we can. A team from Newsgathering is leaving for Riyadh as soon as possible. We have no further details at the moment but are doing all we can to find out exactly what happened and we'll update you as soon as we can.

Simon was a freelance cameraman who had worked for several international broadcasters as well as the BBC on many world events and current affairs programmes. His talent and experience were widely recognised. He, and his wife Louise Bevan, are well known to many of us and his loss is a great shock to all his colleagues as well as his friends and family.

Richard Sambrook