Mikhail Gorbachev calls for election re-run in Russia
Former Soviet President Mikhail Gorbachev has said the Russian election was marred by fraud and has called for a re-run.
"The country's leaders must admit there were numerous falsifications and rigging, and the results do not reflect the people's will," he said.
Protesters were planning new rallies for Saturday, as arrests in Tuesday's crackdown reached 800 across Russia.
The BBC's Wendy Urquhart reports.