The woman arrested under anti-terrorism laws remains in detention while a property in Stratford is still being searched.
She was arrested on January 26 on suspicion of an offence under the Anti-terrorism, Crime and Security Act 2001.
A warrant for further detention of the 36-year-old was obtained yesterday at Westminster Magistrates Court to allow her to be kept in custody at an east London police station until this evening.
Searches of a property at Park Road started on at 4pm on Sunday and are still ongoing.
The search and arrest took place as part of an intelligence-led, pre-planned operation.
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