Hackers have reportedly hijacked computer servers belonging to PGA of America, which organises the PGA Championship.

According to sports magazine Golfweek, files containing marketing materials for the competition and the Ryder Cup in France have been locked, pending payment of a ransom.

A bitcoin address was reportedly provided but the hackers did not specify a desired amount.

"We exclusively have decryption software for your situation," they wrote.

"No decryption software is available in the public."

A PGA spokesperson confirmed that the PGA Championship would not be affected but did not comment further.