A Tata Tea-owned garden faces legal action by Kaziranga National Park authorities after the Forensic Science Laboratory here confirmed the presence of pesticide in the carcass of a cattle "used as a bait' to kill a tiger at Hatikhuli tea estate in January. The director of the forensic laboratory, R.P. Gohain, today confirmed that pesticide residues were found on the cattle carcass that resulted in the death of a tiger cub in the Rongagora division of the tea estate, owned by the Tata Tea's North India Plantation Operations.