NEW : Attorney General Michael Brown to visit Brown . NEW : Grand jury could begin hearing testimony Wednesday . Whether he 'll return to duty is uncertain . Protests over Eric Holder case are likely to continue . The Wilson investigates whether police violated the civil rights of Ferguson , a black teenager .
NEW : Attorney General Michael Brown to visit Brown . NEW : Grand jury could begin hearing testimony Wednesday . Protests over Eric Holder case are likely to continue . The Wilson investigates whether police violated the civil rights of Ferguson , a black teenager .