Amidst a raging controversy over the quality of ghee and alleged presence of animal fat in the laddus distributed to the devotees of Lord Venkateswara shrine here, the Tirumala Tirupati Devasthanams (TTD) on Friday said ghee suppliers to the temple body took advantage of the lack of in-house adulteration testing facility and also not making use of outside facilities.

Lab tests had revealed the presence of animal fat and lard in chosen samples, TTD Officer J Shyamala Rao said.