The 3,800-dwt Orapin 4 (built 1983) lostcontact with authorities on Wednesday while en route to Indonesia from a terminal inSingapore.

The Thai International Tankers-owned vessel wasscheduled to arrive in Pontianak, Indonesia on Thursday at around lunchtime.

It eventually arrived in Thailand’s Sri Rachaport on Sunday evening, according to the International Maritime Bureau (IMB).

The Thai-flagged ship was carrying 3,377t of Automative Diesel Fuel (ADF) when it departed from Singapore.

This is the latest ina series of attacks against small product tankers in and around Malaysian andSingapore waters.

Inlate April a small products tanker wasboarded off the coast of Malaysia by a group of 16 heavily-armed pirates andhad some of its cargo stolen.

A few days earlier aSingapore-managed tanker was boarded in the Malacca Straits by hijackers who kidnappedthree Indonesian crew and stole around 3m litres of diesel.