Investigations are continuing after a man died while diving with his son near Eyemouth in the Scottish Borders.
The 52 year old from Yorkshire appears to have taken ill while he was in the water on Saturday afternoon. He was rescued by a life boat crew but pronounced dead at Edinburgh Royal Infirmary. Police say there are no suspicious circumstances.
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34-year-old Christopher Peck was involved in a head-on crash with a drunk driver. His funeral has taken place in his hometown, Workington.
The arrests come weeks after a much-publicised series of appeals to mark the 30th anniversary of the 18-year-old's death.