West Midlands Police have confirmed in a press conference that two sets of CCTV are to be released from around the time Mohammed Saleem was attacked on Monday.
One piece shows a white male running in nearby Wyndcliffe Road. Police say he could be central to the inquiry but could be unconnected.
Another piece of footage shows a seven seater people carrier type vehicle near to the mosque.
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A senior court prosecutor from Worcester stabbed his wife in the head as she slept after a bout of depression brought on by work pressures.
A man has appeared at Birmingham Magistrates Court charged with the murder of another man who was found dead in Coventry on Monday night.
"This was an incident of domestic violence of the highest severity which sadly had tragic consequences."