A man has been charged with his wife's murder.
Ty Medland, 25, of Cavell Avenue, Peacehaven, has been charged with the murder of Samantha Medland, known as Sam, and is due to appear at Brighton Magistrates' Court later.
At around 8.45pm on Sunday police were called to Queen Square following a report that a woman had received serious stab wounds.
Mrs Medland was found at the scene with serious injuries and was taken to hospital but died a short time later.
A post mortem has revealed that Mrs Medland died as a result of multiple stab wounds.
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A section of the M3 has been closed and bomb disposal units are at the scene after reports of "potential hazardous material in the road".
Largely dry with cloud and some sunny spells this afternoon with light winds.
Dry with sunny spells and light winds.