Authorities have been looking for a masked man after receiving several reports he had attacked Bangor residents in their homes Monday morning.  A woman told Bangor police the man came into her home and choked her until she passed out at about 11:00 A-M.  When she woke up, he was gone.  Just down the street, a man said his attacker matched the description she had given.  A police dog lost the scent and it’s possible the suspect used a vehicle to leave the area.  The victims say the masked man didn’t take anything or show any weapons.  He also remained silent.