Dhaka, Sept 21 (UNB) – BNP acting secretary general Mirza Fakhrul Islam Alamgir returned home tonight (Monday night) after taking medical treatment abroad for nearly two months. “Mirza Fakhrul arrived at Hazrat Shahjalal International Airport by a Singapore Airlines flight around 10:40pm,” BNP chairperson’s media wing member Sayrul Kabir Khan told UNB. Senior BNP leaders, including…