SEATTLE (AP) — Washington state’s race to help newly laid-off workers left it vulnerable to fraud.

Last week officials hinted at the scope of the damage done: hundreds of millions of dollars paid out in fake claims. Much of it apparently went to a West African fraud ring using identities stolen in prior data breaches, such as the massive 2017 Equifax breach.

Authorities have tried to claw back as much money as possible and blocked hundreds of millions more from being paid to head-off the problem. By late last week, attacks had been detected in at least nine states, but it appears Washington was hit the worst.

Officials have not yet released the total amount thought to have been stolen.