Five teenagers have been arrested in connection with a blaze which closed the M1 motorway in north London in both directions, Scotland Yard has said.
The youths, aged between 14 and 17, were arrested in a series of raids across Barnet and Harrow in north London on Wednesday morning.
They are being held in connection with the blaze that damaged the M1 motorway bridge directly above a north London scrapyard on 15 April, as well as two other fires, police said.
The M1 blaze has been linked to two others in the Moat Mount Open Space in Mill Hill, north London, one between 14 and 15 April and the other between 15 and 16 April.
The fire-damaged section of the M1, between junctions 1 and 4, only fully re-opened six days after the blaze and further closures may be needed in the future so permanent repair work can be carried out.
The damage to the elevated section of the motorway in Mill Hill led to huge delays for football fans and marathon runners travelling to and from the capital.
All the youths arrested were teenage boys, Scotland Yard said.