The U.S. Transportation Security Administration (TSA) said on Tuesday in response to a lawsuit that it does not search electronic devices of air travelers for content.

The American Civil Liberties Union Foundation of Northern California filed a Freedom of Information Act lawsuit last week seeking government documents from the TSA detailing "searches of electronic devices belonging to people traveling on domestic flights."

In 2017, the agency said that it had implemented stronger screening procedures for carry-on items that required passengers to place all electronics larger than a cell phone in bins for X-ray screening. TSA said the screening "is solely intended to verify that there has been no physical tampering or hidden threat placed within the electronic device."