The pictures purportedly show false number plates fixed to Ndumiso Jaca's car and motorbike.
Nchabeleng Mahlatse and Lucky Segopo are believed to be armed with the gun used to shoot the two policemen.
Nkosinathi Nhleko says attacks against police officers in Gauteng are worrying.
Police say the armed suspects entered Courtroom 7 and opened fire.
Nico Henning provided the state with R10 million surety to secure his release on bail.
Police say the mother and her lover were arrested on Saturday in Pretoria north.