Johannesurg - Five people were arrested when they were caught with Johannesburg metro police uniforms in Midrand on Friday, a spokesman said.
Chief Superintendent Wayne Minnaar said the men were travelling in two Volkswagen Polos when they were stopped and searched by the police.
The uniforms and an illegal firearm were found. The cars had also since been linked to other crimes, he said.
“An investigation will be launched as there have been criminal activities reported this week where bogus cops were involved.”
More arrests were expected.
Bogus Johannesburg metro police officers stole two cars in Midrand earlier this week.
Superintendent Edna Mamonyane said three armed men in metro police uniforms stopped a Toyota Quantum near Midrand on Wednesday.
They got into the car and took the man driving it to Eldorado Park, where they left him.
On Monday, people posing as metro police pulled a motorist over and stole his car on the M1, between the Marlboro and Grayston road off-ramps. They left him at the side of the road. - Sapa