Jamie-Leigh Kelly, 31, left the centre for susceptible moms and kids in north-west London on Tuesday along with her three-year-old daughter and new child child boy, the Metropolitan Police mentioned.
The kids had been discovered at an handle in Harwich on Sunday.
The children had been taken into police safety after which to hospital as a precaution.
A 31-year-old lady was arrested in a while Sunday after attending an east London police station and was additionally taken to hospital for precautionary checks, a Scotland Yard spokesperson mentioned.
They added: “We’re not interesting for details about the whereabouts of Jamie-Leigh Kelly.”
A 63-year-old lady was arrested on the handle in Essex on Sunday on suspicion of kid abduction, aiding an offender and perverting the course of justice.
She stays in custody at an east London police station.
Two different individuals have been charged as a part of the investigation, the Met mentioned.
Ashley Hawkins, 52, of Alex Man Gardens, Dagenham, and Jordan Hardy, 30, of Connor Highway, Dagenham, are on account of seem at Southend Magistrates’ Court docket in Essex on Monday, charged with two counts of kid abduction.