Police are searching for a woman in connection with allegations of an assault and malicious communications.
Essex Police are appealing for information to find Sophie Sall, 23, who has links to South Ockendon, and has worked as a child minder.
The appeal comes after a girl suffered a mark to her chest on Friday April 24.
Police received further reports that a woman received a threatening message.
She is known to use the alias, Louange Heroisme, and has an eyebrow piecing.
Anyone with information is asked to call our Child Abuse Investigation Team on 101 or Crimestoppers anonymously on 0800 555 111.
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