A class-action lawsuit filed Wednesday alleges a southern Nevada casino’s computer systems were left vulnerable to a cyberattack, leaving the personal information of more than 200,000 customers and employees exposed, court documents said.

A hacker was able to access the sensitive information involving Rancho Mesquite Casino over several days in November 2022, documents said. Information accessed included full names and Social Security numbers.

The company operates the Rising Star Sports Ranch Resort in Mesquite, the Eureka Casino in Las Vegas and The Brook in Seabrook, New Hampshire, its website said. Two of the company’s properties were affected, documents said.

The class action, filed in Las Vegas court, alleges the company failed to provide “to provide timely and adequate notice” about the breach.