"Jasbir has told me that he was being threatened there," Sattu Singh said.

CBI had filed a closure report in the 1984 riots case involving Tytler and had claimed that Jasbir, who had submitted an affidavit before the Nanavati Commission that probed the riots, was not traceable. However, he told TV channels claiming that CBI had never approached him to be a witness.

The investigating agency immediately sent him a request for recording his statement to which he has not responded till date.

Asked about the possibility of Jasbir's return to India and assist CBI in the case, his father said, "it's natural that if he comes here, the threats (to him) would be more. They can even get my son killed."

He also claimed Jasbir's children, who are staying with their grandparents in the national capital, were being threatened by some people apparently belonging to the establishment.