But a new investigation by RFE/RL's Persian-language service, Radio Farda, reveals that German police thought that Farrokhzad's murder bore the hallmarks of an Iranian government operation and that the perpetrators appeared to have used one of the singer's acquaintances to carry out the killing. That assessment was found in excerpts, obtained by Radio Farda, of an internal 1993 report on "Iranian state terrorism" by the German federal criminal police (BKA), who say the "department-specific publication" has since been destroyed.