The defence force has confirmed that the army has been deployed in KwaZulu-Natal, Mpumalanga, Limpopo, and the Free State.
It says the troops are there to support the police.
A third suspect has been arrested in connection with the torching of trucks in Mpumalanga.
He was arrested in Emalahleni on Thursday.
Police say all the suspects will appear in court on Monday.
More than 20 trucks have been set ablaze in these provinces since the weekend.
Police Minister Bheki Cele has confirmed 12 persons of interest have been identified in connection with the attacks.
At the same time, National Police Commissioner General Fannie Masemola says they are closing the net on those behind the attacks.
Source: eNCA
In other news – VIDEO of Gogo Maweni wearing a huge snake as a necklace stuns Mzansi
Popular Mzansi reality TV star and Sangoma, Gogo Maweni has faced a lot of criticism on social media over the last few days. When she isn’t discussing turning people into tokoloshes, she is playing with snakes and taking midnight strolls in graveyards.
Most recently, she shared a clip of herself with a snake curled around her neck. While most people have an innate fear of the animal, it would appear Maweni finds them cuter than a bunny rabbit. Learn More