Two mobile phones, £20 cash and a watch were stolen in Cottons Park, Cottons Approach in Romford last Wednesday, May 29.
Two males, aged 15 and 16 years, were approached by two suspects described as black and between 18 and 20 years.
They asked the victims if they had any property with them and patted them down before stealing the items.
Anyone with information should call the police on 101 or Crimestoppers anonymously on 0800 555111.
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