Sept 11 (Reuters) - MGM Resorts International has shut down some of its computer systems due to cybersecurity issues, according to a post on the company's website on Monday.

The casino and hotel giant is investigating the matter with assistance from external cybersecurity experts and has informed law enforcement agencies.

In addition to its physical systems, MGM's official website is also down, with phone numbers provided to reach its hotels and reservation system.

(Reporting by Pritam Biswas in Bengaluru; Editing by Devika Syamnath)