From the BBC in London:
Events have taken place in London and Gaza to mark two weeks since BBC reporter Alan Johnston went missing. The BBC set up a satellite link between Gaza and its London Television Centre so staff and supporters could exchange messages of support on giant screens. Director General Mark Thompson praised Johnston's commitment for reporting from Gaza in very difficult conditions. "All of us in London and in Gaza want him home," Thompson told about 100 journalists and staff members.
Thompson described Alan Johnston as "one of those amazing BBC people who make extraordinary sacrifices and take considerable risks because they believe a story needs to be told." "He remained with his friends and colleagues in Gaza when others left and as you have heard, Alan has many friends and colleagues in Gaza." "We continue to talk to people in the Middle East and in the UK to try to secure Alan's release," he added.
Speaking for the Palestinian journalists' syndicate in Gaza, Shadi al-Kashif pledged their protests "will not stop" until Johnston's release. Palestinian officials have said all possible efforts are being made to secure his release.
Numerous demonstrations have been held in Gaza in support of the missing correspondent. On Sunday more than 100 journalists, politicians and others attended a rally in Gaza calling for his release. Last Wednesday Palestinian journalists began a rolling strike. Numerous international demands for his immediate release have been made by the Arab League, the UK government and the European Union.
Johnston has been the BBC's correspondent in the Gaza Strip for the past three years - and the only foreign journalist from a major media organisation based in Gaza. The BBC describes him as a highly experienced and respected reporter.
Johnston, 44, was born in Tanzania and educated in Scotland. He joined the BBC World Service in 1991 and has spent 8 of the last 16 years as a correspondent, including periods in Uzbekistan and Afghanistan.