The filing marks the first disclosure by the casino operator, controlled by founder and billionaire Republican donor Sheldon Adelson, that is was under investigation.
The SEC subpoenaed company documents in February 2011 relating to its compliance with the antibribery act while the U.S. Department of Justice also advised Sands it was conducting an investigation, the company said in its annual report filing.
"There were likely violations of the books and records and internal controls provisions of the FCPA," the company said.
Sands spokesman Ron Reese said on Saturday he had no additional comment beyond the SEC filing.
The state medical examiner's office has revised the death toll from a tornado in an Oklahoma...
