This is the shocking moment a dam burst in Poland - flooding a town with torrents of muddy water. Footage shows the floodwater surging into Stronie Slaskie on September 15 following heavy rain from Storm Boris.

By Barbara Erling WROCLAW, Poland (Reuters) -Flood defences in Poland's third-largest city Wroclaw looked to have held firm on Thursday, after the worst floods in at least two decades ravaged central Europe this week.

Poland's third-largest city Wroclaw was bracing for peaking flood waters on Thursday, with early indications its defences were holding firm, after the worst floods in at least two decades ravaged central Europe this week.

A Russian citizen has been arrested in Poland for allegedly orchestrating the beating of Leonid Volkov, a former aide to Alexei Navalny. This arrest follows earlier offenses against Russian opposition figures linked to Navalny's Anti-Corruption Foundation.

A Russian citizen suspected of directing the beating of Leonid Volkov - an exiled top aide to late Russian opposition leader Alexei Navalny - was arrested in Poland, the National Prosecutors' Office said in a statement on Friday.

Russian lawyer Anatoly Blinov has been arrested in Poland for allegedly organizing attacks on allies of Alexei Navalny.