BANGKOK, Feb. 9 -- The nearly 18-hour shooting rampage that killed at least 27 people in Thailand's northeastern province of Nakhon Ratchasima ended, as the gunman himself was shot dead by security forces on Sunday.

Thai police announced that at 9: 00 a.m. on Sunday, the alleged gunman, Sgt. Maj. Jakrapanth Thomma was shot to death inside Terminal 21 shopping mall.

Thai Prime Minister Prayut Chan-o-cha who visited the injured at Nakorn Ratchasima hospital on Sunday, confirmed that 27 people including the shooter died and 57 people have been injured.

The shooting spree began when he shot and killed his commanding officer at a house near the Surathampithak army camp on Saturday afternoon.

Police said Jakrapanth stole a Humvee type vehicle, drove to the camp where he killed at least two Army officers to get access to weapons and ammunition.

As he was heading to the city, he fired at civilians and police along his way.

Local media reported that the gunman was previously engaged in a verbal row with his superior and wanted revenge.

Jakrapanth posted onto social media of several messages, photos and videos along the way to Terminal 21 shopping mall.

As he arrived at the shopping mall around 6:00 p.m. on Saturday, the 32-year-old gunman got out of the vehicle and fired at motorists in the traffic and pedestrians.

One of the selfies on his Facebook page shows a huge flame on the background.

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