Hackers breached the websites of all Las Vegas Sands Corp. websites.
The Nevada State Gaming Control Board was investigating the breach, and the FBI was also aware of the matter, said AP.
Patrons got error messages when they tried to visit the home pages of the Venetian casino, famous for its ersatz canals, and the Palazzo casino, which is next door on the Las Vegas Strip. The company's corporate site was also hacked, as were websites for Sands casinos in Bethlehem, Pennsylvania, Singapore, and the Chinese gambling enclave of Macau, said AP.
FBI spokeswoman Jenny Shearer confirmed that the agency was aware of the problems with the Sands sites, but she declined to say whether the FBI had launched an investigation, AP reported. Las Vegas police spokesman Larry Hadfield said he was not aware of the issue, said AP.
The hackers also disrupted some of Sands' internal systems, leaving employees without access to their company email accounts.
Other Las Vegas-based casino companies reported no problems with their sites Tuesday, said AP.