Prashant Kishore's Aggressive Politics Against BJP?

Prashant Kishore was always considered a B team of the BJP and it is public that all help to run the party and move around is only because of the support from the ruling party source says. All of a sudden PK became aggressive and was not keeping any barrel down from hitting the BJP leaders of the Bihar source says. PC at the senior party and government functionaries is are clear hint that he is not going to stop in between source says. It's rumoured that the change came only after getting an income tax notice from the department and later notices were also served to his wife and her employees working in an NGO source says. PK has gone on record to say that his wife is not in politics and she hardly visited Bihar 3 or 4 times and is doing her job with an NGO then what has necessitated the IT to serve notice not only to her but also to her staff sources say.