Saturday 17 April: Nail bomb explodes outside the Iceland supermarket in Brixton, south London, at 1726 BST, injuring 39 people.

Sunday 18 April: Scotland Yard remains "open minded" about who planted the nail bomb, but has ruled out links with "known terrorist groups". Meanwhile a 23-month-old boy caught in the blast recovers after surgeons remove a nail lodged in his brain.

Monday 19 April: A man claiming to be from the extreme right-wing group Combat 18 rings police to say the organisation is behind Saturday's bomb attack. He calls at 0606 BST from a phone box on Well Hall Road, south-east London, near where black teenager Stephen Lawrence was murdered in April 1993. Police say they are keeping an open mind about the claim.

Tuesday 20 April: Police appeal for help to catch the bomber on the BBC's Crimewatch UK television programme.

Wednesday 21 April : Police say they have received a "tremendous" response to their televised appeal for help on Crimewatch UK, and that a prime suspect has emerged.

Friday 23 April: It is revealed that three more far-right groups also claimed responsibility for the Brixton nail bomb attack. The claims were made on Monday, but police do not reveal the group's identities, and say it is impossible to say whether the claims are real or hoaxes.

Saturday 24 April: A reconstruction of events leading up to last Saturday's Brixton nail bomb attack is carried out by police. Just before 1800 BST, a suspected nail bomb explodes in a car in Brick Lane, injuring five people. Police say they have received a call from someone claiming Combat 18 was responsible, and that they are linking the attack to last Saturday's bombing in Brixton.