Detective Branch (DB) of Dhaka Metropolitan police (DMP) on Tuesday evening interrogated the chairman and chief executive officer of DATCO Group Musa bin Shamser for his alleged involvement with the arrested fake additional secretary Abdul Quader Chowdhury.   Musa along with his family went to the DB office in the afternoon and he was interrogated for more than three hours. Briefing reporters afterwards, its Joint Commissioner (DB-North)Harun-ur- Rashid said that businessman Musa Bin Shamsher cannot avoid responsibility for the offences of fraudster Abdul Quader.   He allegedly appointed Quader as his legal adviser and also gave him a cheque of Tk 20 crore.  Evidence of Abdul Quader's frequent contact with him has been found, he said. Read: Digital Microfinance: DB arrests five e-loan frauds