Two months after the Central Bureau of Investigation had described him as untraceable, a key witness in a 1984 anti-Sikh riots case involving senior Congress leader Jagdish Tytler surfaced on Thursday in the United States and the investigating agency said it would record his statement if he comes to India.

The witness, Jasbir Singh, in California, told TV news channels that the CBI had never contacted him before and that he was ready to testify before a court in Delhi if he was assured security.

"The fact that you are talking to me means that I am accessible..." Singh told an interviewer.

Singh, who has filed several affidavits against Tytler, a former Union minister, before various commissions, told the channel that he was willing to testify, provided he and his family's safety was guaranteed.

He also claimed a Congress councillor had called him five months ago and asked him to change his statement or face dire consequences.