The Pennsylvania state police raided the offices of a group that helps Democrats with voter registration efforts, searching for evidence of voter-registration fraud, the Philadelphia Inquirer reported Wednesday.

Investigators sought a warrant last week to search a FieldWorks LLC office in Delaware County in suburban Philadelphia for documents, financial information, and a list of employees, according to documents reviewed by the Inquirer.

According to the Inquirer, officials said in the warrant that they were looking for “templates … utilized to construct fraudulent voter registration forms” and “completed voter registration forms containing same or similar identifying information of individuals on multiple forms.”

A judge in Delaware County signed the warrant on Friday, but it’s unclear when the raid occurred, according to the Inquirer.

In a statement provided to TPM, Fieldworks LLC said that the group follows the law and reports any problems on voter registration forms.

“The integrity of our electoral system is a foundation of our democracy, which is why FieldWorks has the most rigorous quality controls in the industry and zero tolerance for fraud. Our team works closely with state and local officials to ensure that we exceed the requirements of the law. FieldWorks proactively brings any problems with registration forms to the attention of local officials,” the statement from Fieldworks reads.

As for this particular case, the group said in its statement, “Fieldworks is now working with county officials to provide them with information on our program and applications they are investigating. In keeping with our regular practice, we will work aggressively with authorities to seek the prosecution of anyone involved in wrongdoing. As this is an ongoing investigation, we’ll decline further comment until the authorities conclude their efforts.”

Tierney Sneed contributed reporting.