Five policemen, including two sub-inspector of Brahmanbaria's Akhaura Police Station, have been sued yesterday for extorting Tk 90,000 from an expatriate by "threatening to kill him in crossfire". Harun Mia, a resident of Masjid Para in Akhaura municipality, filed the case with a Brahmanbaria court against sub-inspectors Matiur Rahman and Humayun Kabir, Assistant SI Khorshed,