Bradford was today given "one last chance" to name and shame the rioters who devastated the city and injured more than 300 police officers.

Detectives launched their final three-week campaign to identify 60 suspects caught on video footage of the violence and urged the public to continue its overwhelming support.

Detective Chief Superintendent Max McLean, who is heading Operation Wheel - the police investigation into last July's violence - said he recognised that Bradford now needed to move forward.

Releasing pictures of 20 suspects, reproduced in today's edition of the Telegraph & Argus, he added: "This is likely to be our final appeal to the people of Bradford to name those people caught on camera committing serious public order offences.

"We would again ask people to pick up that phone and make sure those involved pay the price for their destructive actions and the irreparable damage they caused to the reputation of this city.

"We must not forget that, of the 120 photographs released last year, 117 were identified because of the tremendous support and help of local people."

As a result of the poster appeal, 112 of those suspects have been arrested, with around half handing themselves in. These people will receive credit when sentenced in court, Det Chief Supt McLean said.

In total 168 people have been arrested, with 64 being charged with riot and 23 with violent disorder.

Det Chief Supt McLean said the scale of arrests was "unheard of" in British justice history and stressed that Operation Wheel was Britain's biggest criminal inquiry.

So far, 13 people have been jailed with four adults receiving 20 years between them for charges of riot.

Seven youths received a total of nine-and-a-half years detention and training sentences.

Det Chief Supt McLean stressed that the suspects pictured were not "faces in a crowd" and added: "We are not scraping the bottom of the barrel here - these people have committed offences every bit as serious as people featured on previous posters.

"We are committed to making sure those responsible are brought to justice - we can only do it with the public's help. Please support us once more."

Another 40 mugshots will be released over the coming fortnight.