Armed members of a police special task force entered a Cape Town city centre shop on Wednesday as a hostage situation unfolded.
The city centre was brought to a standstill as traffic was diverted and people barred from the vicinity where robbers stormed into Cash Crusaders on the corner of Long and Strand streets.
A tweet from an onlooker appeared to show one of the hostage-takers being arrested. Police spokeswoman Sergeant Noloyiso Rwexana said that she would provide full details soon.
It was unclear how many people were being held hostage. A witness some hostages had been freed while others remained inside.