Update: Authorities say bunker tanker taken over by own crew, not hijackedUpdate: Authorities say bunker tanker taken over by own crew, not hijacked

The bunker tanker, carrying around 900 tonnes of diesel worth MYR1.57m ($392,800), went missing and was believed to have been hijacked after leaving Malaysia's Tanjung Pelepas port on Tuesday before it was relocated in the waters off Batam, Indonesia, according to the Malaysian Maritime Enforcement Agency (MMEA).

MMEA chief Ahmad Puzi Ab Kahar was quoted from his earlier tweet that the bunker tanker, Indonesia-flagged 950-dwt Vier Harmoni, had been taken to Batam.

A MMEA spokesman was reported saying that there was no element of terrorism onboard the tanker. Early investigations showed that the ship had been taken by its own crew due to a disagreement between the ship's operator and the crew.

Indonesian Navy spokesman Edi Sucipto was also quoted saying that the issue was due to an internal management problem between the operator and the crew.