14 September 2011 Last updated at 19:14
Two people were injured after the explosions in the shopping street
A 28-year-old woman has been arrested in Luton as part of an investigation into a suicide bombing in Sweden in December last year, Scotland Yard says.
She was held on Tuesday on suspicion of the preparation of terrorist acts.
The Met Police said she was questioned at a central London police station and later bailed until November.
Taimour Al-Abdaly, 28, an Iraqi-born Swede who had been based in Luton, blew himself up in Stockholm on 11 December last year.
Two people were injured after two explosions in the Swedish capital’s shopping district. Abdaly apparently killed himself as he tried to set off a car bomb in the busy street.
It later emerged that Abdaly had moved to the UK in 2001 to study and at the time of the bombing had been living in Luton with his wife and three children.