WASHINGTON: India is taking the allegations regarding the assassination plot of Sikh separatist leader Gurpatwant Singh Pannun in the US seriously, the White House has said but refrained from commenting on the FBI probe into the matter and the criminal case filed by the Department of Justice.The remarks by White House Press Secretary Karine Jean-Pierre on Monday came amid an investigative media report claiming that a RAW official identified as Vikram Yadav was involved in the assassination plot of Pannun in the US and the move was approved by the then Indian spy agency chief Samant Goel.Pannun is one of the main leaders of the Khalistan movement and the legal advisor and spokesperson for Sikhs for Justice, which aims to promote the idea of a separate Sikh state. The Indian government has declared Pannun a terrorist.