BTP
Police have launched an appeal to help identify two men after pepper spray was released on the London underground.
Officers released images of two people on Twitter and believe they may have information that could help their investigation.
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The incident was reported at 9.13am on Saturday 20 July at Oxford Circus station.
A number of people were treated at the scene by paramedics for coughing and lack of breath. There are no further concerns for their health and their symptoms would suggest the gas is CS gas.
Anyone who witnessed the incident, or who knows the identity of the men, is asked to contact BTP by texting 61016 or by calling 0800 40 50 40 quoting reference 171 of 20/07/19.