One of seven people arrested in a Metropolitan Police counter-terrorism operation has been released without charge.
The 30-year-old woman had been arrested in west London on Thursday.
Six other people are still being held in custody.
Police say the operation is not linked to the Olympics or Paralympics.
More top news
Video has emerged showing a man being tasered by police during a tense stand-off in east London.
A man from London who was the subject of cruel online taunts has had the last laugh when a group of celebrities threw a party for him in LA.
Taffazul Hoque is 38 but suffers from autism and epilepsy. He is in danger of having a seizure and is sought urgently by his family.