Eleven gay bars in Seattle were sent letters Tuesday threatening ricin attacks — in what some are describing as a hate crime.

The anonymous letters say, "I 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 hospital."

A 12th letter was sent to the alternative weekly The Stranger, according to its Web site. That letter says the paper should be "prepared to announce the deaths of approximately 55 individuals."