correspondent cristina alesci joins us. walk us through the allegations. what are they saying? >> reporter: busy day at bloomberg campaign head. quarters for sure. they're doing damage control and explain the situation. apparently a vendor that the campaign had hired. that vendor went to a subcontract who hired a call center subcontractor to go out and make calls for the campaign. that company is called pro com, and it used imprisoned people to make calls. i believe the one prison was out of oklahoma, and they used incarcerated people. they disclosed when they made those calls, the people making them that they were making them on behalf of the campaign but did not disclose that they were prisoners. mike bloomberg issued a statement that essentially did not attack the press, but tried to clear things up saying earlier today a news outlet reported that prison workers were being used by a