South Yorkshire Police have a woman in custody after a knife incident in the town centre on Saturday morning.
Detectives from the North East Counter Terrorism unit are assisting with the inquiry.
Everything we know about the incident is available to read here.
An eyewitness account of the terrifying attack is here.
Members of the public have been asked to be vigilant and report any suspicious activity by calling 101, or 999 if a crime is in progress or there is a risk to life.
Here's everything we know
If there’s any more updates this evening or tomorrow we will re-launch the blog, but for now that is it.
Here’s the latest police statement confirming counter-terrorist detectives are involved and this is an eye witness account of how he talked down the woman who was reportedly shouting ‘kill kill’
Hero market trader talked down knifewoman
Abdul Razzaq, 43, has told the Press Association how he confronted the woman after she produced a huge kitchen knife in the town centre and shouted “kill, kill, kill, kill”, stabbing one man in the shoulder and then continuing to walk the streets with the weapon.
Mr Razzaq followed the 6ft-tall woman, who was dressed in Muslim clothes but did not have her face covered, and alerted police to where she was in the town’s railway station.
Senior officer makes statement
SYP Assistant Chief Constable, Tim Forber, has updated us with the latest official line.
He has confirmed detectives from the counter terrorism section have been called in to support them.
He said: “We understand this morning’s incident will have been distressing and shocking for those in the town centre and wider Barnsley communities.
“Rest assured we are working relentlessly to piece together what happened.
“A kitchen knife has been recovered by officers and is being forensically examined.”
Counter terrorism officers involved
Police have just confirmed a woman is in custody and a kitchen knife was recovered.
They have said they are keeping an “open mind” about the incident but have called in Counter Terrorism support.
South Yorkshire Police has said there will be an increased police presence at this afternoon’s football match, Barnsley v Walsall
Town centre returning to normal
People caught up in the incident have said they were locked in shops for about half-an-hour.
Shoppers inside the town’s M&S were reportedly shut inside while the attack went on.
An eye witness is now claiming that the ‘stabbed’ victim was barely injured and hasn’t needed hospital treatment.
Some police cordons are still in place but the town centre is back to normal for the most part.
Forensics searching bins
The true nature of this incident is still unfolding.
There are some reports of forensics officers searching through bins with a mirror.
Peel Street and the market have been closed for a time.
Confusion about scale of the incident
There’s reports of other victims on other media sites and social media, but police at the moment are saying it’s just the one.
Claims about the identity of the alleged attacker is also on Twitter.
Police have not yet commented on either of those claims.
One person in custody
Police are saying one person has been arrested but an investigation has been launched to see if it was an isolated attack.
It is thought there were early fears that it was a terrorist attack but that has not been confirmed.
Multiple police scenes in Barnsley
Police have descended on Barnsley town centre this morning and apparently sealed off large sections of the town centre after multiple incidents.
Early reports are that a woman with a knife was spotted.
One man has been injured.
South Yorkshire Police are currently working to establish if there is still a threat from others.
