The same day, a US-based source reported that a group calling itself the "Homeland Panthers" (Persian: یوزپلنگان وطن‎ yuzpalangan vatan) claimed responsibility for the explosion at the Natanz nuclear enrichment facility.[22] The New York Times claimed that a source which it identified as a "Middle Eastern intelligence official with knowledge of the episode" told the newspaper that Israel was responsible for the attack, and that a powerful bomb had been used.