Flight MH70 departed from KLIA for Tokyo's Narita Airport at 10.50am local time and that upon the aircraft's return to KLIA, passengers were told that their flight had been rescheduled to 1.15pm on a different aircraft, Star Online reported.
The MAS website lists the MH70 as having left KLIA at 1.22pm. The airline could not be reached for comment.
MAS has been in global spotlight this year following the disappearance of flight MH370 on March 8, and the crash of MH17 on July 17.
Another flight MH17, with 298 on board, was shot down by suspected separatists while on a scheduled flight from Amsterdam to Kuala Lumpur.