The daughter of a pensioner stabbed to death near his home in Small Heath says she feels the police have acted unprofessionally throughout the investigation.
Mohammed Saleem, who was 75, was killed on his way home from evening prayers a month ago. His daugher has also shown ITV News Central threatening letters sent to her brother's gym in the months leading up to the attack.
Detective Superintendent Mark Payne, who is leading the investigation, says West Midlands Police Force is "working around the clock" to piece together the information they have about the crime.
"I want to reiterate how important it is to come forward with any information you may have. You can speak to Crimestoppers anonymously and there are robust plans to support and protect witnesses through the justice system.
Our thoughts remain with the family and friends of Mr Saleem who continue to support our investigation."
Councillor Waseem Zaffar has told ITV News Central the grandfather who was stabbed to death in Small Heath on Monday 29th April was a 'positive role model'.
Mohammed Saleem was an upstanding member of this community. He was somebody who gave so much to this community. He was involved in many activities in and outside the local mosque. He was somebody who young people looked up to as a positive role model.