Three were killed and four others were injured in a shooting at a shopping mall in Bangkok, said Thai officials. The Metropolitan Police Detective Department on its facebook page said a 14-year-old suspect has been arrested after surrendering.
He was being questioned over the incident at the Siam Paragon mall, they said.
The suspect had been using a handgun, added the police.
The situation had been brought under control and police cleared the scene later.
The video of the incident that surfaced the internet showed shoppers running out of the mall. The nearby metro station was also shut.
Loud noises and gunshots were heard from the videos that was shot from inside the mall.
Prime Minister Srettha Thavisin has shared his "deepest condolences" with the victims and their families. "I am aware of the shooting event at Siam Paragon and have ordered the police to investigate. I am most worried about public safety," he wrote on X.
Gun ownership rates are very high in the region though mass shooting cases are not that common in the region.
The Central Investigation Bureau had earlier posted a grainy image on its Facebook page of an individual they said was the gunman, dressed in khaki cargo pants and a baseball cap.
In 2020, a soldier killed 29 people and injured dozens more in the city of Nakhon Ratchasima.