^ Shair, it's not true. Where did you hear this?
He might've visited a mosque to meet with the scholars or attend any lectures as he himself is highly learned and indulges in intellectual debates and discussions on many subjects including Islam. But he's not an Imam.
Check out wikipedia - says he is from Bangla Desh. Was there a BD then?
Anyone with enough interest should edit the Wikipedia page and inform, it's absolutely wrong. And no, there was no Bangladesh till Dec 1971 either.