Thirteen bikers who caused chaos in a "Mad Max-style" Halloween ride-out in Leeds city centre have been jailed.

They were handed prison sentences of between 12 months and two years for their parts in the organised event, which saw more than 100 riders on motorbikes and quad bikes disrupting traffic and riding through pedestrianised areas.

David Armitage, who organised the event through social media, was filmed during the incident encouraging "carnage" and telling riders to "shut down" the city centre.

Police said the lawlessness and fear caused on October 31 led to people branding the scene as like Mel Gibson film Mad Max.

Sentencing the defendants at Leeds Crown Court, Judge Geoffrey Marson QC said: "This is a case which calls for a deterrent sentence.

"Behaviour of this sort, having serious effects on this city, cannot be tolerated."

At today's hearing the defendants were each jailed for a minimum of 12 months.

David Armitage, aged 26, of Brookfield Road, Headingley was jailed for two years; Jamie Ayres, aged 26, of Lupton Avenue, Burmantofts was jailed for 12 months; Omar Ahmed, aged 24, of Stonegate View, Meanwood was jailed for 12 months; Ashley Benson, aged 25, of Whingate Road, Armley was jailed for 12 months; Michael Clough, aged 27, of Torre View, Burmantofts was jailed for 14 months; Ben Colley, aged 26, of Butterbowl Road, Farnley was jailed for 14 months; Dean Fawcett, aged 28, of Intake View, Middleton was jailed for 12 months; Nicholas Flaherty, aged 29, of Prospect Street, Farsley was jailed for 18 months; Rachel Taylor, aged 29, of Nowell Lane, Harehills was jailed for 12 months; Joshua Hawley, aged 22, of Mead Grove, Colton was jailed for 12 months; Dylan Lockwood, aged 23, of Torre Grove, Burmantofts was jailed for 12 months; Adam Nicholson, aged 26, of Henley Terrace, Bramley was jailed for 12 months; Anton Rojas, aged 26, of Skelton Avenue, Burmantofts was jailed for 12 months.