Islamabad, Aug 26 - Expelled Bharatiya Janata Party (BJP) leader Jaswant Singh will visit Pakistan later this week to promote his controversial book on Pakistan's founder Mohammed Ali Jinnah, the Online news agency reported.

Although Singh's visit to Pakistan has not yet been made public, he may arrive here Friday, the report said.

The former Indian external affairs minister was expelled from the BJP last week for praising Jinnah in his book 'Jinnah: India, Partition, Independence', abruptly ending his three-decade-long membership with the party.

Singh will sign copies of the book at a bookstore in Islamabad before heading to Karachi at the weekend.

The organisers are keeping it secret at the moment as the visit has not yet been fully finalised. Invitations are being passed to Islamabad's who's who by word of mouth only, according to the report Tuesday.

The 600-page book, the first recent work by an Indian in praise of Pakistan's founder, viewed as all the more significant because its author is a senior politician, it said.