Miscreants on Sunday evening have set ablaze to a bus of Bangladesh Secretariat at Purana Paltan area in the capital. The bus was torched on the eve of the BNP-led 20-party alliance’s countrywide hartal on Monday. No-one was injured in the incident while two firefighting units doused the blaze. BNP-led 20-party alliance called the dawn-to-dusk hartal programme for Monday protesting “the foiling” of its Gazipur rally and arrest of party leaders and activists.