Police in Bangladesh have arrested the deputy leader of the main opposition party, as tensions rise over its calls for nationwide protests and blockades.
Bangladesh Nationalist Party (BNP) Secretary General Mirza Fakhrul Islam Alamgir is being held on charges of arson, bombings and vandalism.
His arrest comes as opposition leader Khaleda Zia was confined by police to her offices for a fourth day.
The unrest comes on the first anniversary of disputed elections.
The vote — boycotted by the opposition who said it would be rigged — was won by the ruling Awami League.