Today marks a year since a mother-of-two from Hull disappeared without a trace.
Renata Antczak has not been seen since dropping her youngest daughter off at school.
Detectives leading the murder investigation say all lines of inquiry to find her alive have "proved fruitless" and have revealed fresh details into her disappearance including:
- Her daughters have heard nothing from her since April 25, 2017
- No person who knew Renata has been in contact with her at all
- Every one who knows her says it is completely out of character
- There has been no sign or trace of her across the UK and Europe
Detective Superintendent Tony Cockerill says all efforts to find Renata alive have failed, and has described her missing personal milestones - including what will soon be her daughter's 12th birthday - as "extremely significant".
He said: "We are still in the process now of several lines of inquiry to try and find her, find out what’s happened to her. I believe it’s a murder investigation and have treated it as such for a considerable time.
"All our lines of inquiry to find Renata alive and well have proved fruitless – that’s throughout the UK and Europe – and we can find no person who knew Renata personally who has had any contact whatsoever since the 25th of April 2017.
"We have pursued every line of inquiry possible to find some contact from her and have been unable to do so, and significantly, her daughters have heard nothing from her since the day she went missing, and all those who know her would say this was completely out of character and would not have happened.
The last known sighting of Renata was at Broadacre Primary School, wearing a distinctive bright yellow puffa jacket. She was reported missing that night.
What was initially treated as a missing person's inquiry, soon became a murder investigation which would become all consuming for those working night and day to solve it.
Det Insp Supt Cockerill said: "We are 12 months down the line and our concerns for Renata have never changed. We have invested significant time and resource, and still continue to do so, on Renata’s disappearance.
"We have had a team of Major Crime Team detectives, led by me, for the last year devoted to this investigation and committed to finding out what happened to Renata, and supporting her family throughout that process, and we continue to do so.
Although police have made previous appeals - including through a social media video that reached 300,000 people globally - officers believe someone, somewhere, may still hold information that could be critical to the inquiry.