Citing the neighbouring country's support to terrorism as the reason behind the opposition, the party warned that the function will be disrupted if not canceled.
Sena vibhag pramukh Ashish Chemburkar submitted a letter to director of Nehru Planetarium here, demanding that the event be cancelled and organisers informed accordingly.
"The people at Nehru Planetarium where the event is scheduled, told us they will try to cancel it," Chemburkar told PTI.
"We have informed them that we will disrupt the event if it is not canceled," he said.
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Kasuri will launch the book 'Neither a Hawk nor a Dove: An Insider's Account of Pakistan's Foreign Policy' , in Mumbai on October 12 at the Hall of Culture, Nehru Centre, Worli.
"Our purpose in organising this function is to make our own humble contribution to the much-needed normalisation of relations between India and Pakistan. Kasuri's widely appreciated book shows his strong commitment to peaceful and cooperative ties between our two countries," ORF Chairman Sudheendra Kulkarni had said.
During his stay in Mumbai between October 11 and 14, Kasuri, besides attending the book launch function, will also visit Mani Bhavan and Jinnah House "if possible", he said.
Kasuri will also meet veteran movie star Dilip Kumar at his residence.
In a letter to Fadnavis, Kulkarni asked the state government to provide adequate and fool-proof security to Kasuri during his stay here.