A bomb found at the Signboard traffic police box in Narayanganj this afternoon has been defused by the bomb disposal unit of Dhaka Metropolitan Police (DMP). An improvised explosive device (IED) was defused around 7:45pm after blocking the Dhaka-Chattogram Highway, said Mahmuduzaman, assistant commissioner of the DMP. Mashiur Rahman, officer-in-charge of Siddhirganj Police