On the eve of the first anniversary of the BDR carnage that left 57 army officers dead, Bangladesh Premier Sheikh Hasina on Wednesday vowed to track down those who provocated the mutiny. 900 border guards are expected to be charged for the rebellion in the paramilitary force. Addressing a public rally at suburban Gazipur district, she said the government will expose them to justice along with the killers. Her remarks came a day before the first anniversary of the carnage at the Bangladesh Rifles (BDR) headquarters in Pilkhana area in Dhaka. However, she did not indicate who could have provoked the rebellion in which 57 army officers serving the paramilitary force were among 74 people killed. But, she alleged that when all the partners of the ruling Awami League-led grand alliance joined the rescue efforts, main opposition BNP of her archrival Khaleda Zia was not seen at the scene.