The body of the Thai soldier who killed at lest 26 people is wheeled into an ambulance as paramedics attempt to revive him.

Footage shows the medics shouting, "Pump his heart, keep going, keep going" as Sergeant Major Jakrapanth Thomma, 32, is wheeled out of the shopping mall in Nakhon Ratchasima, northern Thailand, on Sunday morning (February 9).

The gunman - who police said "went mad" - killed at least 26 people including hostages and seriously injured at least 57 before being shot dead by police marksmen in a flurry of gunfire at 9am local time.

Officers found three dead hostages in the ground floor of the building in a store room at the Foodland supermarket where the killer had been holed up.

The rampage began more than 15 hours earlier when Jakrapanth Thomma killed three army officers at a nearby military base, stole weapons and ammo, fled in a Humvee then opened fire on pedestrians, shoppers and drivers at the Terminal 21 shopping mall.

He then went inside the building and took hostages as terrified staff and shoppers ran for their lives or cowered inside locked rooms, fearing for their lives until military freed them in the early hours of the morning.

The body of the Thai soldier who killed at lest 26 people is wheeled into an ambulance as paramedics attempt to revive him.

Footage shows the medics shouting 'pump his heart, keep going, keep going' as Sergeant Major Jakrapanth Thomma, 32, is wheeled out of the shopping mall in Nakhon Ratchasima, northern Thailand, this morning (Feb 9).

The crazed gunman - who police said 'went mad' - killed at least 26 people including hostages and seriously injured at least 57 before being shot dead by police marksmen in a flurry of gunfire at 9am local time.

Officers found three dead hostages in the ground floor of the building in a store room at the Foodland supermarket where the killer had been holed up.

The rampage began more than 15 hours earlier when Jakrapanth Thomma killed three army officers at a nearby military base, stole weapons and ammo, fled in a Humvee then opened fire on pedestrians, shoppers and drivers at the Terminal 21 shopping mall.

He then went inside the building and took hostages as terrified staff and shoppers ran for their lives or cowered inside locked rooms, fearing for their lives until military freed them in the early hours of the morning.