The brazen gun-slinging robbery at golf legend Chi Chi Rodriguez's house wasn't just extremely premeditated, it was an inside job -- this according to investigators.
Authorities in Guayama, Puerto Rico tell TMZ they believe they can prove an employee at Chi Chi's compound slipped the robbers a key to the house before it all went down.
We're told two of the suspects were charged this morning with several crimes -- including robbery, illegal possession of a weapon and burglary. Bail for the men has been set at $350,000 each.
As TMZ reported, 74-year-old Chi Chi and his wife were robbed in their own home at gunpoint last month -- and the thieves made off with over $500,000 in money and belongings.