*UPDATE*
Caitlin and Martika have now been missing from home for seven days.
Police have had confirmed independent sightings of Caitlin and Martika, which would indicate that they are safe and well and have not come to any harm.
Officers have also been in contact with the girls who have stated that they are safe and well and intend to return home when they are ready to do so, however they have refused to say where they are.
A police spokesperson said:
“We understand people may be harbouring Caitlin and Martika because they believe this is in the girl’s best interest.
"This is not the case. It is important that we establish where they are and how they are and anyone who is protecting or sheltering them will find themselves liable to criminal proceedings being taken against them."
We are appealing for anyone with any information as to the whereabouts of Caitlin and Martika to contact Northamptonshire Police in confidence on 03000 111 222.