The use of the death penalty globally is continuing to fall, an annual report by Amnesty International has said.

Although 23 countries carried out executions in 2010, four more than in 2009, the number of people executed dropped from at least 714 to at least 527, the rights group said.

But that figure does not include China, whose executions are thought to be more than all other countries put together.

Gabon last year became the 139th country to cease the practice.

Mongolia declared a moratorium on the death penalty.