Two pensioners have been robbed in their homes in separate incidents.
Up to four men forced their way into the home of an 80-year-old man in Castlereagh at about 1500 BST on Thursday, knocking him over.
He was held down while the house on the Newtownbreada Road was ransacked. The thieves made off with cash.
Meanwhile, in west Belfast, a woman in her 70s was held down by an intruder while two men searched her house in the Riverdale area. They also stole money.
The incident took place at about 1900 BST on Thursday.
The woman sustained bruising to her wrists and was badly shaken, while the elderly man was badly shaken but was unhurt.
Superintendent Brian Maguire, district commander for the Castlereagh area, said the attacks were appalling.
"They are absolutely totally unacceptable in today's society and I can assure you that a rigorous investigation is under way," he said.
Superintendent Maguire said police were looking for information on five men who were travelling in a silver Ford Focus car in relation to the attack on the man in Castlereagh.
Anyone with information concerning either incident has been asked to contact detectives.