A baby boy who was injured after falling from a first floor balcony has regained consciousness.

The youngster suffered multiple injuries after plunging 12ft onto concrete.

Paramedics were called to Eastbourne Clinic in Grange Road, Eastbourne at about 7.40pm on Saturday night (June 2).

The one-month-old was taken from the clinic, which treats mothers for postnatal depression, to Eastbourne District General Hospital.

He was later transferred to St George's Hospital in Tooting where his condition was described as critical but stable.

A police spokeswoman said the child fallen from a window.

A 29-year-old woman, believed to be the child's mother, was arrested at the scene and detained under the Mental Health Act.

The privately-run clinic has 27 beds for people suffering from acute psychiatric conditions, including schizophrenia, manic depression and drug and alcohol dependency.

It has a separate unit where it offers treatment to women who suffer from postnatal depression.

Up to four woman and babies can be looked after for up to six and-a-half weeks.

It is believed the baby fell from one of the windows in this unit.

A source close to the investigation said: "Nursing staff were looking after the woman at the time but they were unable to react as what happened was completely unexpected. They are, of course, absolutely devastated."

A Sussex Police spokeswoman said: "Following the incident on Saturday, June 2 when police attended an address in Grange Road, Eastbourne following reports that a one month old baby had fallen from a window, police can confirm that the baby has regained consciousness and remains in a stable condition at St Georges Hospital, Tooting.

"The clinic where the incident happened is not under investigation by Sussex Police."

She said it was too early to say whether the woman arrested would be facing any charges.

The clinic has refused to comment.

According to a recent study by the Royal College of Midwives, found one in five women suffer from postnatal depression.

The risk of suffering the condition is worse if the mother had a difficult time during the birth.

It develops eight weeks after birth and can last for weeks.