The police state that it all happened at 4.30 pm.
A man came into the pharmacy store and said he had two hand grenades with him.
He threatened to blow them up if he did not receive medicine.
The staff gave him medicine, after which he left the store.
The police were alerted and then sent several patrols to the scene, and a search operation was launched for the man.
A preliminary investigation into the robbery has been initiated.