The bodies of William Wycherley and his wife Patricia were wrapped in duvets that each had two bullets in them, a court has heard.
Their daughter, Susan Edwards and her husband Christopher, are accused of murdering the couple 16 years ago and burying their bodies in their back garden in Mansfield.
ITV News Correspondent Ben Chapman, who is at Nottingham Crown Court, reports:
William & Patricia Wycherley's bodies were found wrapped in duvets, lying one on top of the other, under the garden. 2 bullets in each duvet
More top news
One person has been confirmed dead and several are injured in the ongoing incident in Las Ramblas.
A number of fatalities and several injuries have been reported after a van has crashed into people in the Ramblas area of Barcelona.
John Underhill said geological changes 55 million years ago mean the UK's geology is unsuitable for shale oil and gas production.