Police have cordoned off an area outside Bognor Regis railway station following a stabbing earlier this morning.
Eyewitnesses reported seeing a person with a stab wound to the arm, though the injury is not believed to be life-threatening, but is life-changing.
The area outside the main entrance has since been sealed off to the public by police tape while investigations continue.
Earlier today our reporter at the scene said several police units were in attendance, with officers directing people away from the cordon and advising commuters to use alternative entrances. Trains continue to run, but access around the station is restricted while investigations continue.
Police tape surrounds part of the pavement and station forecourt, and officers have been seen carrying out enquiries.
Statement from British Transport Police:
Officers were called to Bognor Regis railway station at 8.27am today (25 November) following reports of a stabbing at the station. Officers attended, alongside paramedics, and a man in his 20s was taken to hospital with injuries that are thought to be life changing and are consistent with being stabbed.
Detective Inspector Brendan Jones said: "A man in his 20s was arrested at the scene in connection. While we believe this to be an isolated incident, enquiries are ongoing. We urge anyone who witnessed the incident to get in touch and help us with our investigation."
Anyone with information is asked to contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 114 of 25 November. You can also contact Crimestoppers anonymously on 0800 555 111.
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