French soldiers guard suspected Somali pirates on board the French warship Le Nivose, after their capture on May 3, 2009, as part of EU"s Atalante.

Somali pirates have hijacked the Sri-Lankan-flagged oil tanker Aris 13 in the Indian Ocean, and reportedly guided it to the Puntland region of Somalia, in the first hijack of a commercial ship by Somali pirates since 2012.

The freighter turned off its tracking system and diverted its course towards the Somali coast after sending a distress call, John Steed of aid group Oceans Beyond Piracy said. Eight crew members were reportedly on board the tanker at the time of the hijack.

“The ship reported it was being followed by two skiffs yesterday afternoon [13 March]. Then it disappeared,” said Steed, who is in contact with naval forces who were tracking the hijacked vessel.

Steed said that an aircraft from the region’s naval force was flying overhead to track the ship’s movement to determine what was happening.

The Aris 13 is owned by Panama Company Armi Shipping, managed by Aurora Ship Management in the United Arab Emirates, according to Reuters.

According to sources, regional officials in Somalia are assessing the circumstances of the hijack. At least eight pirates are suspected to have been involved in the hijack, the sources said, adding that the vessel moved near the coastal town of Ras Asayr.

Piracy off Somalia’s coast has declined in recent years. At its height in 2010-2011, piracy had cost the global economy $7bn a year in increased trade expenses. Pirates were attacking tens of ships every month and claimed millions of dollars as ransom for their release. More than 1,000 hostages were also taken captive by the pirates during that period.

It has been three years since the Somali pirates successfully hijacked a commercial ship. The number of attacks has declined due to shipping firms hiring private security and the presence of international warships, naval forces from Nato, the EU, the US and other independent countries.