"Yes I did meet and address a Communal Harmony International Conference organised and addressed by Zakir Naik also in Mumbai," he said.
However, the former MP chief minister said permission of the state governmnet was taken for organizing the event.
"Conference was held after due permissions by Govt of Maharashtra and there was no criminal case against Zakir Naik at least to my knowledge," he tweeted.
"Obviously Govt of Maharashtra would have the video recording of speeches by Zakir Naik and myself in that Conference," he said in a series of tweet.
The leader said he is ready to face any trial if he had violated any law by attending the conference.
"If I have violated any Law, Govt of Maharashtra or GOI is free to register a case against me and I am prepared to face any Trial," he said.
He also questioned "inflammatory speeches" of Hindu Yuva Vahini, Bajrang Dal and VHP leaders.
"But I would like to ask all those who are extremely sensitive of what Zakir Naik speaks? Have they heard inflammatory speeches by Yogi /Hindu Vahini /VHP/Bajrang Dal Leaders against Muslims and Christians?, he said.
"Would any action be taken against all such elements making Hate speeches and inciting violence ? Obviously not. Why?, the leader asked.
Digvijaya Singh came under attack after a video of him surfaced dubbing the Naik a "messenger of peace" in 2012 and also sharing the stage with him.