More details are emerging about what may be a violent history of the man who's become known for delivering phony sign language interpretations at Nelson Mandela's memorial service last week.

The South African government says it is aware of reports that the bogus sign language interpreter at Nelson Mandela's memorial once faced a murder charge.

The man accused of faking sign interpretation while standing alongside world leaders like U.S. President Barack Obama at Nelson Mandela's memorial service said Thursday he hallucinated that angels were entering the stadium, suffers from schizophrenia and has been violent in the past.