The two men convicted of the murder of Pc Sharon Beshenivsky were "absolutely ruthless" and had no respect for life, detectives said yesterday.
Birmingham man Yusuf Abdillh Jamma, of Whitmore Road, Small Heath, was unanimously convicted of the officer’s murder and Muzzaker Imtiaz Shah earlier admitted the charge at Newcastle Crown Court.
The 38-year-old mother was shot and killed on November 18 last year as she arrived at the scene of a robbery in Bradford city centre on the day of her youngest daughter’s fourth birthday.
Her colleague Pc Teresa Milburn was also gunned down in the street as the robbers escaped with little more than #5,000.
Detective Superintendent Andy Brennan said Shah was "an incredibly dangerous individual" and prison was "the only place he should be".
"Hopefully, he will be there for a very long time," he added.
The detective who led the murder inquiry said: "We are absolutely convinced that Shah pulled the trigger."
He said it was too early to say whether any further prosecutions would follow, but said he was "absolutely determined" to bring to justice the two men – Jamma’s brother Mustaf and Piran Ditta Khan – who remain on the run.
Part-way through the trial, the judge Mr Justice Andrew Smith ordered the jury to clear Shah of Pc Milburn’s attempted murder. No one else was charged with shooting the 37-year-old mother of one.
Mr Brennan said he did not agree with the judge’s decision to clear Shah of the attempted murder of Pc Milburn. But he added he respected the decision.
Faisal Razzaq and his brother Hassan were convicted of Pc Beshenivsky’s manslaughter by a majority of 10-1 in the 11th week of the trial.
The brothers were cleared of her murder after more than 20 hours of jury deliberations.
But yesterday the jury failed to reach a verdict in relation to the robbery charge faced by 25-year-old Raza Ul-Haq Aslam after almost 23 hours and was discharged.
Robert Smith QC, prosecuting, told the court Aslam would now be retried on the robbery charge. Neither Pc Milburn, aged 37, nor husband Paul Beshenivsky, aged 44, were in court yesterday