Detectives investigating the rape of a 12-year-old girl in east London have arrested a 17-year-old boy.
Police appealed for information following the attack on the "vulnerable girl" by three man, two of whom "brutally raped her", on Saturday 27 July.
The teenage boy remains in custody at a police station in east London.
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The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Daniel Cowell has been jailed for five years and four months after ramming a police patrol car with a stolen transit van.