Washington State Attorney General Bob Ferguson announced a lawsuit filed in King County Superior Court against Motel 6 Wednesday morning.

The suit claims the motel chain voluntarily provided guest lists to U.S. Immigration and Customs Enforcement (ICE) agents for at least two years without the guests' knowledge or consent.

The guest list Motel 6 provided included names, date of births, room numbers, license and license plate numbers, and other private information.

According to Ferguson, Motel 6 admitted that at least six Washington state locations shared guest information with ICE. This information led to at least six individuals being detained.

Four of the six locations released personal information of at least 9,151 guests, even though their privacy policy assured consumers it would protect this information. Motel 6 has not provided any information on the other two Washington state locations that shared information with ICE agents.

Ferguson says the number of guests affected will likely increase, as Motel 6 provides additional information over the course of the lawsuit.

“Motel 6 will be held accountable for their misconduct,” Attorney General Ferguson said during a press conference.

The voluntary release of information by Motel 6 violates the Consumer Protection Act, and is an unfair and deceptive business practice, the lawsuit says.

Ferguson launched his investigation after reading about a similar case in Phoenix, Arizona. In September, the Phoenix New Times uncovered two Phoenix-area Motel 6 locations regularly handing over guest information to ICE.

Motel 6 indicated it would stop the practice and claimed it had been “undertaken at the local level without the knowledge of senior management,” according to the Phoenix New Times

“It was not isolated to two hotels in Phoenix, not by a long shot,” said Ferguson. “The company's actions were methodical. They trained their new employees on how to do this.”

The Attorney General's Office says the violations go back at least two years, dating back to 2015, under two presidential administrations.

So far only corporate locations are listed in the suit, not franchises.