Officers from the Underwater and Confined Space Search Team are attempting to remove the body of an adult from an ornamental well in a garden in Surrey.
Police said the process is likely to take some time as the positioning of the body in the four-foot deep well presents a number of logistical challenges".
Seven men were arrested on suspicion of murder this afternoon and are still being questioned by police.
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The BBC contends there was a ‘legitimate public interest’ in its coverage and is vigorously defending the case.
Judges at the European Court of Human Rights have refused to intervene in the life-support treatment fight.
Supporters of Mark Meechan, including former English Defence League leader Tommy Robinson, were at court for the hearing.