A delegation of Maharashtra Pradesh Congress Committee (MPCC), led by party legislator Bhai Jagtap lodged the complaint at the Shivaji Park Police Station.
"The objectionable write up on the poster was close to the President's picture. Mukherjee had visited Thackeray during the Presidential election campaign. In keeping with Indian culture and tradition, Mukherjee folded his hands on meeting Thackeray. But, a write up on the poster says the President bowed before him," the complaint said.
"This is a serious matter," the party said.
The poster which was put up at Sena Bhavan in Dadar by the Shiv Sena's East Mumbai unit, also showed Prime Minister Narendra Modi bowing reverentially before Thackeray.