Chris Brown's recent home invasion robbery is been linked to his closest friends. At least that's what the singer and the police believe.

According to TMZ, Law enforcement sources as well as sources connected with Chris say, they believe the 4 guys who broke into his home Wednesday morning July 15, were not just casual friend, they were very close t him.

The police also believes a club promoter was involved in the home attack. They claim, he was someone who got first hand information that Brown received $50,000 cash that day for an appearance and that the money was in his home safe.

According to the site, the cops are also pinning the robbery on the famous 'Bloods' gang group and claim a member of LAPD's Gang Unit was assigned the case.