By Andre Koopman and Gill Gifforsd
Safety and Security Minister Charles Nqakula is supremely confident that the perpetrators of the Soweto bomb blasts will be caught, he said unequivocally on Thursday.
Nqakula said police and state security agencies were convinced that the bombers were from right wing groups.
"We know exactly who they are and where they are. We know what they are doing."
He said it was now just a matter of "connecting them" to the attacks.
Right wing groups had been monitored by police for some time, he added.
As he spoke, police were compiling an identikit of two suspects seen leaving an area near Soweto, where a bomb was found, the minister said.
Police spokesperson Phuti Setati said police were "following up on certain leads".
Setati said a team of investigators drawn from various specialist units, including bomb disposal experts, crime intelligence, serious and violent crimes detectives and forensics units were toiling around the clock.
"We are busy drawing up a profile of a person we believe can assist us in our investigations," Setati said.
Nine bombs exploded in Soweto on Tuesday night, killing a local woman. A tenth explosion near Pretoria wounded two others, raising fears that white extremists were back on the warpath.
In parliament on Thursday, members of the safety and security committee of the National Assembly moved swiftly to approve the Explosives Bill which was urgently needed in the light of the blasts, members said.
The legislation controls the manufacture, use and possession of explosives. To combat urban terror the Bill allows police to take fingerprints and genetic samples from any suspect without a warrant.
Introducing the New Intelligence Services Bill in the National Assembly, Intelligence Minister Lindiwe Sisulu said security services were able to deal with the bombings as "we have invested a great deal of the past two years refining our response".