An escaped prisoner serving a 30-year term for murder could find himself £20,000 out of pocket after police put up a reward using his own money.
Shaun Walmsley, 28, has been on the run since February 21 after two armed men confronted police officers escorting him to Aintree University Hospital in Liverpool.
Walmsley, an inmate at HMP Walton, was convicted in 2014 of murdering Anthony Duffy, 33, and jailed for a minimum of three decades.
A month since his escape, police have now issued a £20,000 reward for information leading to his arrest - using Walmsley's own money.
In a statement, Merseyside Police said it had received a "really good response" from the public to its appeals about his whereabouts.
But Detective Superintendent Natalie Perischine said: "We have invested significant resources in trying to trace Walmsley to no avail, and we don't think it is right that public money is being used in this way.
"Walmsley, and those that released him, had put in a considerable amount of planning to execute his escape and it is only right that we use Walmsley's own money to encourage people to tell us where he is."
DS Perischine said the force was as determined as ever to put Walsmley back behind bars.
Walmsley was helped to escape after two men, armed with a knife and gun, confronted prison officers guarding him outside of Aintree University Hospital.
A gold-coloured Volvo, which was used for the escape, was later found abandoned in the Fazakerley area of the city.
Walmsley is described as:
- Slim build
- Dark brown hair; blue eyes
- Last seen wearing dark bottoms and blue jacket
One of the accomplices in the escape was described as having his face covered and wearing white shoes, grey tracksuit bottoms with a stripe down each side, a grey hoodie and a dark coat.
The second accomplice was said to have his face covered, wearing a green coat, dark Nike trainers and grey tracksuit bottoms.
Anyone with information should contact police on 999, or Crimestoppers, anonymously, on 0800 555 111.