Two brothers have been given lengthy jail terms for their part in violence on a Keighley street.

Wasim and Naheem Mumtaz were together sent down for a total of almost nine years following the incident in Queens Road and a separate attack at a taxi office.

After the sentencing at Bradford Crown Court on Friday, police welcomed the prison terms and hoped they would serve as a warning to other people tempted to become involved in disorder.

Det Insp John Mountain, of Airedale and North Bradford CID, said: “The conviction of Wasim and Naheem Mumtaz brings to a close a long and detailed investigation into several outbreaks of gang-related disorder in Keighley and we are pleased they have both been convicted.

“The overall operation into the series of violent disorder incidents in Keighley in 2008 has been a painstaking one through which we have left no stone unturned to identify and catch those responsible.

“The level of violence in some of these incidents was appalling and I hope the convictions send a message to those thinking of getting involved in gangs or disorder that you will be found and face a substantial sentence.”

The Mumtaz brothers are the last of eight men to be convicted following the Queens Road disorder, on March 24, 2008, in which groups battled with weapons. In total those involved have been locked up for more than 23 years.

Police set up an “Operation Knowledge” team — supervised by Det Insp Mountain and led by Det Sgt Karl Noglik and Det Con Andy Cullingford — to investigate that and other outbreaks of violence in the town, including an incident in Lawkholme Lane which eventually saw ten men arrested and convicted.

Officers also ran an education programme warning younger people about the consequences of becoming involved in gangs and carrying weapons.

At Bradford Crown Court last Friday, Wasim Mumtaz, 27, was imprisoned for five-and-a-half years for violent disorder and causing grievous bodily harm with intent, while Naheem Mumtaz, 22, was locked up for three years and three months for two offences of violent disorder.

In the dock with them was civil servant Majid Hussain, 28, of Malsis Road, Keighley, who was sentenced for one offence of violent disorder.

He was spared prison after Judge Peter Benson was told he was the hero who disarmed a knifeman in Keighley town centre in August last year.

Prosecutor Geraldine Kelly said the three accused admitted their parts in an attack at Central Taxis’ booking office, at Keighley Railway Station, on February 17, 2008.

Hussain was the driver and the Mumtaz brothers entered the office, along with others, wielding weapons.

Windows and televisions were smashed and a staff member was cut by glass.

In all £1,000 worth of damage was caused. Naheem Mumtaz confessed to grabbing four phones and pulling out the wires.

Wasim Mumtaz, of Carlton Street, Keighley, admitted wounding Mohammed Tariq in the Queens Road incident, on March 24, 2008.

His brother, of the same address, pleaded guilty to violent disorder during the incident. Wasim Mumtaz’s barrister, Zoe Nield, said he was not armed during either incident. He had matured and gained qualifications in custody.

David McGonigal, for Naheem Mumtaz, said he had kept out of trouble since he was released from a sentence for affray in February last year.

Shufqat Khan, for Hussain, showed the judge a copy of a newspaper telling how he was hurt disarming Raheem Nawaz, who stabbed several people outside Wetherspoon’s pub The Livery Rooms, in Keighley.

Hussain was sentenced to 12 months’ imprisonment suspended for two years with 220 hours’ unpaid work.

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