Sylhet Metropolitan Police (SMP) authorities have suspended Jalalabad police station Officer-in-Charge Alamgir Hossain after a probe found negligence of law enforcers in arresting killers of Samiul Alam Rajon.Alamgir Hossain has been attached to Rangpur range after suspension, assistant deputy commissioner (media) of SMP Rahmatullah said.On Saturday, Alamgir Hossain was closed and sub-inspectors Aminul and Jakir Hossain were suspended.