BBC News with Sue Montgomery

A suicide bomb attack on Shia Muslim worshippers in the Afghan capital Kabul has killed at least 58 people and wounded more than 160 others. The

blast

happened on the most holy day of the Shia calendar. From Kabul, Quentin Sommerville reports.

At a Kabul hospital, wave after wave of victims arrive. And on the pavement outside, a mother mourns for her lost son. "My heart is broken," she cries. Desperate and in despair, more gathered for news of missing family and friends. For many, a day of Muslim mourning became a day of terrible loss. The Taliban issued a statement saying they didn't carry out this attack. The Afghan government says they are lying. But whoever is responsible, it's brought a new kind of suffering to this already fractured country.

Police in Moscow say they have arrested about 250 people during a second night of demonstrations in the Russian capital. The protesters were holding an

unauthorised

rally against the result of Sunday's election, which they say was rigged

in favour of

Prime Minister Vladimir Putin's party. An opposition leader, Boris Nemtsov, who was detained and later released, explained what happened to him.

"Thousands of people decided to meet each other on Triumfalnaya Square. And finally they decided to arrest 250 guys, including me. I'm now freed, but unfortunately our police didn't explain why they did it."

The two most powerful countries in the eurozone, France and Germany, have reaffirmed their commitment to fiscal discipline in the region after a warning by one of the main rating agencies. Following talks in Germany, the US treasury secretary said he wanted to emphasise the importance to the global economy of restoring stability in the eurozone.