(Fixes typo in headline)
CAPE TOWN, Feb 21 (Reuters) - South Africa's competition watchdog said on Tuesday the door was open for other banks to come forward with information in return for immunity from prosecution in the rand currency rigging probe.
The Competition Commission has already granted Barclays (LON:BARC) Africa BGAJ.J conditional immunity and handed Citigroup (NYSE:C) C.N a reduced fine for their cooperation in the investigation.