Unidentified persons set on fire a passenger train in the Bangladeshi capital on Tuesday, resulting in the killing of at least four people, including a woman and her minor son. The development came amidst the political unrest over the January 7 elections. The attack coincided with the nationwide stoppage called by the main opposition Bangladesh Nationalist Party (BNP) on Tuesday as part of its ongoing campaign to boycott the polls and launch a formal protest against the Election Commission’s polls schedule.Unidentified persons set on fire a passenger train in the Bangladeshi capital on Tuesday, resulting in the killing of at least four people, including a woman and her minor son. The development came amidst the political unrest over the January 7 elections. The attack coincided with the nationwide stoppage called by the main opposition Bangladesh Nationalist Party (BNP) on Tuesday as part of its ongoing campaign to boycott the polls and launch a formal protest against the Election Commission’s polls schedule.