The police watchdog has confirmed it is investigating the strip-search of a third child by the Met Police, after two other controversial cases.
Two teenage girls, known as Child Q and Olivia, were strip-searched by officers while they were menstruating.
Acting Commissioner Sir Stephen House said last week there was a further case but he could not discuss the details.
The Independent Office for Police Conduct (IOPC) has since confirmed there is a third complaint.