Herschelle Gibbs [Images] and Nicky Boje may be forced to skip South Africa's series in India later this year with the Delhi Police indicating that the cricketers would be interrogated in the match-fixing case, registered in April 2000, if they tour India.

The Ministry of External affairs has communicated Delhi Police's stand to the South African embassy in India.

"We have not closed the case," Dr K K Paul, commissioner of police told rediff.com on Wednesday.

Dr Paul indicated that with the South African team scheduled to play a five-match ODI series in India in November, the Delhi police would step up its vigil against the bookies operating from the capital.

"We are keeping tabs on the bookies," he said.

Former South Africa captain Hansie Cronje [Images] had admitted taking money from an Indian bookie, now based in London [Images]. The Delhi police had tapped the conversation between the two, which forced Cronje to admit his crime.

Dr Paul refused to say anything about the investigations being carried on by the two Anti-Corruption Unit officials of International Cricket Conference Martin Hawkins and Alan Peacock, who were in New Delhi between September 9 and 11.

The two are said to have conferred with the officials of Central Bureau of Investigations and Delhi police and sought their assistance to track the movements of some of the bookies involved in the match fixing.

Rajiv Shukla, vice president of the Board of Control for Cricket in India, termed the visit of the two officials as "routine".

"They keep on carrying their work. The board had nothing to do with them. I have seen a report in a newspaper about a top batsman being under investigation. I can tell you that such reports are nothing but kite flying," he said.