“Our thoughts are with the family and friends of Lilly at this difficult time,” Det Ch Insp Steven Thomas said in a statement, external.
“We understand that there has been a great deal of interest in this ongoing investigation.
“It is vital that people consider how their language, especially comments made online, could affect our ability to bring anyone found to have committed a criminal offence to justice.
He said inquiries will continue and there will still be a significant police presence in the area.
“Examinations of scenes will be continuing over the coming days, including at Duffryn Park, where cordons remain in place.”
Jenny Hopkins of the Crown Prosecution Service stressed that there “should be no reporting, commentary or sharing of information online which could in any way prejudice these proceedings”.
Anyone with information is asked to contact police.
