A heavily pregnant woman and her six-year-old daughter have been held at knifepoint by robbers.

The 36-year-old woman was at home in Oldham with her four children at about 7.15pm on Friday when they heard a knock at the door.

The woman's eight-year-old son opened the door and two men stormed into the house, dragging the six-year-old girl upstairs where they held a knife to her throat.

One of the men pointed the blade at the woman's stomach while the second searched the home.

The robbers, who stole a new space grey-coloured iPhone 5s, then ran out of the house and across the road down an alleyway.

Detective Inspector Kenny Blain said: "This was an atrocious attack on an innocent family in their own home.

"The mum is due to give birth any day and the stress this would have caused her could have potentially threatened the life of her unborn child.

"How anyone could hold a knife to the throat of a six-year-old is beyond comprehension."

CCTV of two men approaching the house, on Kew Road, has been released in a bid to identify them.

The first man is described as white, more than 6ft, of heavy build, and was wearing a black wool balaclava, dark baseball cap, with the hood of his jacket up. He was wearing a sleeveless black quilted jacket and a dark top, full length black wool gloves, dark blue jeans, and spoke with a local accent.

The second man is described as white, 5ft 5in, about 25 years old, with light-coloured eyes, an oval-shaped face, short patchy ginger beard, of medium build, and he spoke with a local accent. He was wearing a black wool hat pulled down to just above his eyebrows, with the hood from his red jumper over the hat, a black sleeveless quilted coat, black gloves and brown chinos.

Anyone with information should call police on 101 or Crimestoppers anonymously on 0800 555 111.