Remember that the Company often uses news stories to communicate. You'll recall after Vegas, "Paddock's crazy brother" talking about sushi being comped over and over. Comped, because the operation was comped. Any one in the Company could read and see what had happened. No something/someone has been killed, they all know now. Message recieved.
They were. You'll recall all the 187 stories recently and "Oddi" being arrested shortly there after. He saw the contract.