My thoughts exactly!!! There is no evidence to prove that he has committed any crimes, only circumstantial evidence!!
You are right, there is no forensic evidence. The 'circumstantial' evidence and the picture that is being built up now by the police is all there is to go on along with testimonies. Some people think that is substantial evidence. Others may never be satisfied that it is. Leave it to the police and the law is or should be all that is necessary now.