Emergency services have responded to a 'live incident' in Chesham this evening.
In a post published on Facebook, Thames Valley Police Chiltern and South Bucks said: "Police, fire and the ambulance service are currently dealing with a live incident on Broad Street in Chesham.
"Please allow officers to conduct what is needed for the investigation.
"One person is in police custody."
UPDATE: Three injured and one arrested after town centre bleach attack.
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