A library user is wanted for questioning in connection with an incident that involved racially aggravated harassment.
The woman was pictured at Dagenham Library in Heathway on July 23.
A Met spokesman said: “Assisting police with identifications may remove a criminal from your area or could eliminate a suspect form police inquiries.”
Police are asking people who can identify the woman to call Crimestoppers on 0800 555 111 quoting reference number 511 2956.
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