have in my possession approximately 67 grams of ricin with which I will indiscriminately target at least five of your clients. ... I expect them to die painfully while in the hospital," the letters read.
Ricin is a poison that occurs naturally in castor beans and can be fatal if ingested or inhaled.
The bars and their patrons have been on guard. The day after CC Attle received the threat, it posted on its bar a sign reading, "Do not leave drinks unattended