JOHANNESBURG - The Independent Police Investigative Directorate has arrested Eldorado Park police sergeant Mandla Buthelezi.
Buthelezi was out on bail, accused of killing his girlfriend, Chesnay Keppler, in December last year.
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Authorities say Buthelezi violated his bail conditions by intimidating witnesses in the case.
He was taken into custody at the Johannesburg High Court during an appearance.
The case has been postponed to 11 October for pre-trial, and he will be detained until then.