Jatiya Party Chairman Ghulam Muhammed Quader on Friday demanded  that the authorities conduct an impartial probe into the death of Rabiul Islam in police custody in Lalmonirhat. “If Rabiul died due to police torture, the person responsible must be brought to book. The culprit should in no way be spared,” he said in a statement. Read: Anti-liberation forces want to see ‘famine’ in Bangladesh: Minister Quader, also the deputy leader of opposition, said Rabiul's death in police custody is unacceotable  He expressed anger and shock at the death of the youth in custody on Friday, an allegation police denied. The JP leader prayed for the salvation of the departed soul and expressed deep sympathy to the bereaved family.