The country’s navy said the explosive device remained on the 3,300–dwt Lapin (built 1978) following the raid on Friday, in which 2,000 tonnes of oil were stolen.

The Bangkok Post reported that all 15 crew members were unharmed.

The navy has sent bomb disposal experts to the ship, which was anchored 11km from Pak Bara.

Lapin's captain Theekhathat Charoensuk sought help from another vessel after navigating the tanker into Thai waters on Sunday.

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