NEW : Singer reaches plea bargain over attack on Brown . Brown also issued a public apology for the incident just days after his arrest . Singer will serve two years of probation , do community service . Brown pleaded not guilty earlier in connection with assault on Rihanna . Brown will undergo domestic violence treatment , judge said .
NEW : Singer reaches plea bargain over attack on Brown . Singer will serve two years of probation , do community service . Brown pleaded not guilty earlier in connection with assault on Rihanna . Brown will undergo domestic violence treatment , judge said .