(CNN) The candidates seeking the Republican presidential nomination condemned a grand jury's decision to indict two people involved in the making of undercover videos that targeted Planned Parenthood.

"I'm disturbed," Marco Rubio told CNN's Sara Murray on Monday night. "We'll need to learn more, but I'm disturbed that while Planned Parenthood, who are the ones that were actually selling off these (body) parts were found having done nothing wrong, the people who tried to expose them are the ones that are now facing criminal charges."

A Texas grand jury cleared Planned Parenthood in its investigation of the undercover videos, which touched off a political firestorm last summer. Instead, the grand jury indicted two of the activists involved in making the videos, including conservative activists David Daleiden and Sandra Merritt.

Daleiden is a project lead for the Center for Medical Progress, a group that produced the series of videos depicting Planned Parenthood officials discussing fetal tissue and appearing to talk about the price for such tissue.

Planned Parenthood maintains that it does not profit from the sale of fetal tissue and only recovers its costs. After the videos raised controversy, Planned Parenthood announced it would no longer accept reimbursement.

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