Police investigating a large scale disturbance in Cardiff in March 2021 have now arrested more than 40 people across South Wales and other areas of the UK.
South Wales Police and a number of other police forces were involved in the arrests.
In Cardiff, 20 people including 15 men, four teenage boys and a woman have been arrested in connection with the disturbance.
There have been 26 further arrests in the following police force areas - The Metropolitan Police Service (18) Thames Valley Police (4), Bedfordshire (1), Hertfordshire, (1) Surrey (1), and Gwent (1)
The majority of the 46 arrests took place on September 22, 2021 and all those arrested remain on police bail.
Police were called to Shirenewton on Wentloog Avenue, Trowbridge, Cardiff, shortly after 4pm on Sunday, March 21, 2021.
Four men were injured during the disturbance.
A number of weapons were seized at the time and several arrests were made shortly after.
Enquiries have been continuing which have culminated in these further arrests.
Detective Superintendent Ceri Hughes, from South Wales Police, said: “This recent enforcement follows a complex six-month investigation by a team of South Wales Police detectives and has involved the assistance of many other police forces.
“In March we made a commitment to identify those responsible for this large scale disorder and I’m pleased to say that, with the support of other police forces, a significant number of people have been arrested.
“We believe that those arrested were involved in the serious disorder at Shirenewton Gypsy and Traveller Site on March 21 this year.
“As always, South Wales Police strives to protect all communities from serious harm.
“Anyone who thinks they can commit such violence in the South Wales Police area should think again. It will not be tolerated and we hope this multi - force operation makes that message very clear.
“We again thank local communities for their patience, understanding and co-operation while arrests and searches were carried out.”
Witnesses or anyone with information, including video and dash-cam footage relating to the incident on March 21 , is asked to please contact South Wales Police quoting reference *098726.