Former BJP leader makes rare contact with 'former colleague'.
3 held with pirated editions of Jinnah bio; crackdown ordered on fake editions.
Historian Dr J B P More has alleged Jaswant over his book on Jinnah.
The former BJP leader is visiting Pakistan to promote his latest book.
Jaswant's counsel said the authorities did not even read it before banning it.
Inaugurated on Saturday, the Delhi Book Fair will go on till September 6.
Jaswant Singh's book has been banned by the Gujarat government.
Singh has likened himself to Salman Rushdie who faced a ban for Satanic Verses.
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