Planned Parenthood may not be the only target of an undercover campaign into the abortion provider's selling of aborted fetal parts.

The pro-choice National Abortion Federation filed a lawsuit on Friday asking a federal judge to block release of videos that may identify abortion providers, if such footage exists. The group is worried it was targeted by the pro-life Center for Medical Progress, which is named in the lawsuit.

Planned Parenthood and StemExpress, a company that buys and sells aborted tissue samples, are the subjects of four videos released in the past two weeks. The videos detail the provider's efforts to sell aborted fetal body parts and the company's practices in acquiring them.

The federation wants a federal judge to get the center to disclose any recordings or confidential information from the federation's annual meetings. If such footage exists, the federation wants to stop the center from identifying the names of any members.

"NAF meetings are the one and only places where abortion providers can come together to learn about the latest research and advances in the field," the group said.

The group's annual meeting has a slew of security measures, including security staff and local law enforcement around the site, according to the lawsuit. It doesn't publicly post information about its annual meeting.

But the group says the center's undercover operatives gained entry by posing as employees from a biotech company. A similar tactic was used to videotape discussions of buying aborted fetal parts from Planned Parenthood.

The fake company called Biomax Procurement Services produced fake marketing materials, website, driver's licenses and business cards, according to the lawsuit.

Once in the meeting, the center allegedly secretly recorded members and got identifying information, the lawsuit said.

But it isn't known whether the center actually has footage.

The Center for Medical Progress didn't respond to a request for comment on the lawsuit.

The center isn't done releasing videos. David Daleiden, who coordinated the undercover investigation of Planned Parenthood and is named in the lawsuit, told CNN Friday that eight to 10 more videos are on the way.

However, he did not say if the federation's meetings are going to be one of them.

Daleiden also commented on another legal battle that didn't go the center's way.

On Wednesday, a Los Angeles judge issued a temporary restraining order prohibiting the center and Daleiden from releasing any illegally and secretly recorded videos of StemExpress employees. The company argued that Daleiden and the center violated California's anti-wiretapping law.

Daleiden told CNN that the order was a blatant violation of the center's First Amendment rights. He said StemExpress wanted the video pulled because it shows executives admitting to sometimes receiving fully intact fetuses from the Planned Parenthood clinics.

"That could be prima facie evience of born-alive infants," Daleiden told CNN.

The court will consider the company's request for a preliminary injunction next month.

So far Planned Parenthood has not filed for any injunction or restraining order against Daleiden and the center. The group's president has said the group doesn't profit from the sale of aborted body parts, which is illegal under federal law.

But that has not calmed the fury against the group from many Republican lawmakers who are seeking to defund it. The group receives about $500 million in federal funding each year, but the money goes to women's health services as federal funding for abortions is illegal under the Hyde amendment, the group's president has said.