Answered on Aug 13th, 2013 at 11:44 PM
Yes. Many murder cases result in convictions where there is no physical evidence. But that is somewhat misleading: there is always some physical evidence - evidence collected at the crime scene, shell casings, autopsy/medical findings, etc. You mean no physical evidence directly connecting your brother to the crime. It is not the favorite situation for a prosecutor, but it happens all the time. Eyewitness testimony, circumstantial evidence, statements of the accused...all sorts of other evidence, can be used as evidence against the accused. The question is, is this enough to convince a jury beyond a reasonable doubt that the accused committed murder? And that is what a trial is all about. Sometimes there is enough evidence for the jury, sometimes there is not. If the jury does not believe the prosecution witnesses they can acquit the defendant. If they do...not good news for the accused person.