A teenager has been arrested in Thailand following reports of gunshots at a luxury mall in the centre of the capital, Bangkok, police say.
They said the suspect was using a handgun and initial reports suggest three people have been injured.
Footage on social media earlier showed shoppers running out of the centre.
The centre as well as nearby Siam metro station were closed. People have also posted videos, apparently taken from inside the mall.
In one video, four loud noises which sound like gunshots can be clearly heard in the busy complex.
Witnesses have also reported online that they had taken to hiding inside shops and bathrooms.