City of Ekurhuleni Mayor Nkosindiphile Xhakaza says he has written to National Police Commissioner Fannie Masemola to investigate a series of shootings involving senior Ekurhuleni municipal officials.
This follows the assassination of the municipalitys head of forensic audits, Mpho Mafole.
The official was fatally shot in a drive-by shooting on the R23 in Kempton Park on Monday.
The motive of the shooting is unknown at this stage and police are investigating.
Xhakaza says the city has witnessed a disturbing trend of violent attacks against officials fighting corruption.
