Maharashtra Chief Minister Uddhav Thackeray-s father-in-law Madhav Patankar passed away at a private hospital here, Shiv Sena sources said on Monday.

He was 78 and the father of Saamana Group Editor Rashmi U. Thackeray. A businessman from Dombivali in Thane, Patankar breathed his last at Criticare Hospital in Andheri.