Article continues below advertisementBritney Spears is once again making headlines after her recent DUI arrest - and now one of her longtime friends is raising concerns about the situation.Sean Philip, who has known the pop star for nearly two decades, admitted he feels "suspicious" about what led to the incident. Philip spoke to an outlet after Spears was detained on Wednesday night, March 4, "on suspicion of driving under the influence of a combination of alcohol and drugs," according to a press release from the California Highway Patrol.