A childminder is being questioned after a baby suffered head injuries while in her care.
The 14-month-old boy was taken to the Sick Kids' Hospital in Edinburgh at 1.30pm on Saturday after paramedics were called to a house in the Gilmerton area of the city.
He is still being treated at the hospital, where his condition is described as stable.
Neighbours described seeing the paramedics arrive at the house.
Carol Crawford, 69, said: "A paramedic came out of the house holding the baby.
"The paramedic went into the back of the ambulance with him.
"I saw the lady who lives there with her arms around someone, who I think is the baby's mum."
A spokeswoman for Police Scotland confirmed that officers had responded to a "medical" incident at the house and were now carrying out an investigation.
She said: "Police Scotland can confirm that a thorough investigation is being carried out after a child was admitted to the Edinburgh Sick Kids Hospital on Saturday 8th February.
"In line with multi-agency child protection procedures we are working closely with NHS Lothian and the local authority to fully explore the circumstances of how this child was injured. Investigations of this nature are sensitive and complex and it is being approached in an open minded manner to help us fully understand what happened, which may take some time.
"No person has been arrested in connection with the enquiry. The child remains in a stable condition."
People who read this story also read
- Missing child who disappeared from street found safe and well
- Davina McCall 'suffering hypothermia' on Sport Relief challenge
- Heaviest snowfall in 25 years as ski resort hit by wintry weather
- Building to start on £7m development providing 62 new homes
- Two women rushed to hospital after vehicles flip onto roofs in crash