Parsons Green attack: UK police search house in Surrey

UK police are investigating whether several people were involved in Friday’s bomb attack on a London Underground train, which injured 29 people.

A home southwest of London was searched after the arrest of an 18-year-old man in the departure area of the southern port of Dover.

Troops have been deployed to protect key sites across the UK.

Al Jazeera’s Nadim Baba reports.