NCP leader Ranajagjitsinh Patil, who is related to party president Sharad Pawar, on Saturday confirmed that he was joining the ruling BJP.
Patil, a former Maharashtra minister, is the son of Padmasinh Patil, a close aide of Pawar.
Padmasinh Patil's sister is married to Pawar's nephew and former deputy chief minister Ajit Pawar.
Ranajagjitsinh Patil, who unsuccessfully contested the Lok Sabha election from Osmanabad Lok Sabha seat on the NCP's ticket, said he was joining the BJP to solve the problems of the people from the district.
He is likely to join the BJP in the presence of party chief Amit Shah on Sunday in Solapur. Speculation is rife that his father, also a former state minister, too will join the saffron party.
Speaking at a meeting of his supporters here, Ranajagjitsinh said, "We have to take everyone along, need to solve their problems, need to increase our strength and to do this, we all will join the BJP."