Missing aristocrat Constance Marten and her partner Mark Gordon - who went missing after their car was found burning on the M61 in Bolton - are in police custody after being arrested in Brighton.
But Metropolitan Police said an urgent search operation is now underway to find their baby, who has not had any medical attention since birth in early January. The force said the pair were located by officers from Sussex Police in Stanmer Villas, Brighton on Monday night after a member of the public reported seeing them shortly before 9.30pm.
Marten, 35, and Gordon, 48, have been travelling around the UK by taxi since their car was found on fire on January 5.
