"On the day [Monday], police patiently waited and around 11.50am the suspects ... fitting the description drove closer to the place where they were supposed to carry out their evil mission," said Mdhluli.
"Upon noticing police, the four suspects that were at the back of the Nissan bakkie jumped off and fled on foot to evade arrest, leaving the driver alone."
Police officers found electronic detonators, explosives and a battery in the bakkie. The driver was arrested for possession of explosives.
Two more suspects were nabbed after a manhunt.
"The three were charged with illegal possession of explosives, as well as conspiracy to commit crime unknown to the state."
Information led to the arrest of a fourth suspect, who was in possession of an illegal firearm and ammunition.
Three of the suspects appeared in court on Tuesday. The fourth appeared on Wednesday.