Algeria crisis: '10 Britons' still unaccounted for

Around 10 Britons are still unaccounted for as the hostage crisis at a remote gas plant in Algeria continues.

Four Britons are thought to be safe but one Briton is understood to have been killed after Islamist militants stormed the plant on Wednesday.

Prime Minister David Cameron told MPs on Friday that Algeria's prime minister had believed that there was an "immediate threat" to the hostages.

He also said that Britain would do everything it could to hunt down those behind what he called the "brutal and savage" incident.

James Robbins reports.