Police remain in Bognor this morning after a "serious incident" late last night.
Officers are stationed in the Shripney Road area and have taped off a nearby underpass as part of ongoing investigations.
It is believed they are responding to an incident which happened shortly before midnight.
A witness said "it must have been a serious incident" as they had seen "lots of cops" in the area.
They also said that several officers "looked like they were searching for something".
Another passerby reported that police remain in Bognor this morning, eight hours after the incident.
Sussex Police have been contacted for comment.
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