Twenty-eight female guards were unfairly dismissed by a security company because the client‚ Metrora.
A smashed car window led police to the four men suspected of breaking into Archbishop Desmond Tutu's house in Orlando West, Soweto, on Sunday morning.
The men, who were found less than 2km from the crime scene, were arrested yesterday.
Their car was parked in a street in Soweto when police, led by Captain Lucas Monama, pounced on them, after discovering the broken driver's window. Police spokesman Thembi Nkwashu said they did not know why the men had parked there, but suspected they were waiting for a buyer.
Tutu's Nobel Peace Prize medal was found in the pocket of one of the suspects.
The medal, said to be worth more than R1million, was among other valuables stolen from the archbishop's house.
The thieves also took off with two TV sets, a DVD player, a microwave oven and clothes.
"We found the medal in the pocket of one of the men," said Nkwashu.
"There was also a Martin Luther King medal, a golden key inscribed with the words 'City of Sacramento', which is also valuable," she said.
Nkwashu said they found another TV set in a room at Dube hostel in Dube, Soweto.
Another suspect was yesterday arrested in connection with the burglary.
The man, who was arrested in Dube hostel, will be charged with possession of suspected stolen goods.
Police found a 64cm TV. The other four will be charged with housebreaking and theft.
Nkwashu said the fifth suspect was probably not at the house, but was believed to have bought the stolen goods.
She attributed the arrests to the dedication shown by the task team led by Captain Monama of Orlando police station.
Archbishop Desmond Tutu and his wife Leah were out of the country when the burglary took place.