
Tao Poon police were alerted about the robbery at about 4pm.
Bank staff told police that a man threatened a cashier with a gun and demanded money.
The robber arrived at the bank on a blue motorcycle. He wore a black cap and jacket and covered his face with a hygiene mask, staff said. After leaving the bank, he headed in the direction of Dang Bridge.
The bank's headquarters said in a statement that no customer or employee were affected by the incident and the Bang Sue branch will resume service on Wednesday.