` ` These cases are very hard to solve , '' says CNN legal analyst Jeffrey Toobin . But on Wednesday , officials told CNN that federal investigators did n't find enough evidence and that Justice Department prosecutors wo n't recommend civil rights charges against Wilson . Brown ' attorney had expressed pessimism about the investigation in 2014 . Brown is still trying to bring a civil suit against both Brown and Ferguson police .
` ` These cases are very hard to solve , '' says CNN legal analyst Jeffrey Toobin . Brown ' attorney had expressed pessimism about the investigation in 2014 . Brown is still trying to bring a civil suit against both Brown and Ferguson police .