More than ninety former business partners of AT&T Inc. are demanding the Federal Communications Commision block the wireless carrier's $48.5 billion bid for DirecTV, saying the company engaged in anti-competitive behavior and violated fiduciary duty.

In a filing with the FCC, the partners operating under the Minority Cellular Partners Coalition, accuse AT&T of squelching competition and knowingly harming its business partners.

AT&T did not immediately respond to requests for comment.