A Florida inmate mailed a postcard to a second inmate soliciting the murder of a third inmate, according to police who noted that all three prisoners are housed in the same county lockup.

Investigators say that Charles White, 40, and Shaun Yeomans, 41, are “documented members of criminal white supremacist gangs.” Both men are convicted felons with lengthy rap sheets who are currently locked up in the Pasco County jail on separate narcotics charges.

In a complaint affidavit, investigators allege that White last month mailed a postcard to his associate Yeomans that solicited the killing of Lionel Florez, a 21-year-old inmate who has been held in the Pasco lockup since his May arrest for possession of methamphetamine and marijuana.

After jailers intercepted the hit request, White reportedly confessed to sending the postcard and wanting Florez dead. White added that “if he was housed” with Florez, he “would kill him himself.”