Bangladesh’s main opposition party has called for a fourth strike day in a week today to protest against a deadly grenade attack. The opposition Awami League party has led a wave of often-violent protests and strikes after at least seven grenades were thrown at a crowded rally that its leader and former prime minister Sheikh Hasina was addressing in the capital, Dhaka, eight days ago.

Nineteen people were killed and more than 150 wounded in blasts, the worst in a series of bombings that have rocked the volatile Muslim-majority democracy in the last four years. “The women’s front of our party has called the strike for today to protest the attack. It is a people’s protest against the carnage,” Abul Kalam Azad, Hasina’s press secretary, said.

More than 330 people have been injured in protests since last Saturday’s blasts as opposition supporters attacked railway stations, trains, vehicles and government buildings as well as in clashes with police and ruling Bangladesh Nationalist Party (BNP) activists. Analysts say while the strikes pose no immediate threat to the government, political tensions will remain high.