A woman was killed and at least one other wounded by a man with a gun at a cosmetic clinic inside a shopping mall near Victory Monument in Bangkok on Tuesday afternoon.

The attack occurred at the fourth floor of Century Plaza on Phaya Thai Road about 3.22pm. 

A 28-year-old woman, an employee of the cosmetic clinic, was shot dead, hit by 3-4 bullets in her head and body. Another woman, 28, also an employee, was wounded and rushed to a hospital, Thai media reported.

Police cordoned off the area. Seven spent 45-calibre cartridges were found scattered at the scene. 

Jor Sor 100 traffic radio reported one woman dead and two people injured. The attacker fled.

Investigators suspect jealousy as the motive for the murder. A manhunt was launched for the killer.