New Delhi, Sept. 18 -- Police say that the proximity of where the bodies were found and other similarities are sufficiently concerning to investigate if the killings were possibly carried out by a serial killer.

The discoveries of the victims in the Ekurhuleni municipality east of Johannesburg have shocked a country already used to high levels of violence against women.

South African President Cyril Ramaphosa has called for the investigation to be prioritized.

Here's what to know about the killings and the investigation:

Police looking into whether a serial killer is responsible

Gauteng provincial police commissioner Fred Kekana said investigators are examining whether the cases are linked, but warned against prematurely describing t...