Did Lil Za take the rap for Bieber? or did He get racially profiled?

Drugs were found in Justin Bieber’s house and Lil Za was arrested but was Lil Za taking the rap for Bieber or did the police assume the drugs were His because He is black? It first appeared that He was taking the rap but He is now playing the race card saying that He was the only black guy in the house and therefor guilty. Were the drugs His or Bieber’s or someone else? Is He now the king of the Bieber gang? Will Bieber owe Him for life?