CLARKSTON – (WAOK/AJC) -  DeKalb police have arrested an African immigrant,  who they believe sexually assaulted a woman and her daughter in Clarkston.   Police say the suspect is a 20-year old refugee from Rwanda,  who broke into the woman’s apartment on Montreal Road,  early Monday and raped the 40 year old woman and her 15 year old daughter,  who they say are Somalian refugees.   Police say they were notified about the attack,  when the teenaged daughter,  escaped through a window and called for help.  Investigators say they believe the suspect could be connected to other attacks in the area.   He was arrested after the victims returned home,  after being treated at a hospital and spotted the suspect on the porch of  a nearby home.