Five people including Blackburn Rovers footballer DJ Campbell have been bailed until April following their arrests as part of a spot-fixing investigation.
The National Crime Agency said a sixth person is still being questioned as part of the probe.
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Emergency services were alerted to the crash at 3.50pm on Thursday, Sussex Police said.
WARNING: Some people may find some of the images in this report distressing.
Medical staff who helped during the Westminster terror attack have received a royal thanks for their life-saving efforts.