Three people have been arrested and questioned by police following an attack in Keighley on a Big Issue seller.
The magazine vendor was allegedly assaulted by a group of at least eight people and sprayed with CS gas on Wednesday.
His official badge and bag of magazines were taken.
Keighley police are scrutinising CCTV images of the incident.
A police spokesman said: "Three people have been arrested and released on police bail pending further inquiries.
"Some of the incident was caught on CCTV. Not all those present took part in the attack but we want to trace everybody who was there."
The seller, who did not want be identified, was attacked just before noon outside Keighley Post Office.
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