The Federal Bureau of Investigation (FBI) has requested documents from the Senate regarding abortion providers who may have sold baby body parts for profit.

The FBI’s request could mean that it is investigating whether Planned Parenthood and other abortion providers made money off of the baby body parts they sent to researchers, The Hill reported.

Last December, Chuck Grassley, Chairman of the Senate Committee on the Judiciary, referred Planned Parenthood and affiliates to the FBI for possible investigation. In his letter dated December 13, 2016, Grassley wrote that the facts the Senate uncovered “raise a reasonable suspicion that these organizations … may have engaged in a conspiracy to violate the fetal tissue law.”

Grassley also wrote that the Department of Justice failed “to enforce the law that bans the buying or selling of human fetal tissue,” and that there was “substantial evidence” that the abortion providers violated that law.

Grassley offered to provide the unredacted documents to the FBI if requested. That offer included the Senate’s report on the matter.

While abortion providers are allowed to transfer baby body parts for research with compensation commensurate with the cost of obtaining it, they may not sell it for a profit. One company’s records within the unredacted documents show that it paid Planned Parenthood $60 for a fetus and sold the various baby body parts for more than $2,000.

The report added:

The companies involved in transferring fetal tissue have been free to receive substantial payment with impunity, relying on an expansive interpretation of the exception to the ban on buying and selling fetal tissue.