Tributes have been paid to the two unarmed police officers, Fiona Bone, 32, and Nicola Hughes, 26, who were shot dead in Greater Manchester.

Greater Manchester Chief Constable Sir Peter Fahey said a call was made alleging a burglary had been committed at an address in Hattersley and when the officers arrived they were attacked with a gun and a grenade.

Police said Miss Bone died at the scene and that Miss Hughes died a short time later.

Colleagues have paid tribute to them in statements issued through Greater Manchester Police.

Miss Bone's colleagues said: "When Fiona first joined the shift, she was quite quiet and reserved. However, she came out of her shell and had a great sense of humour, always enjoying a good laugh."

Miss Hughes' colleagues said: "Nicky was very bubbly and loved life and socialising. She was a chatterbox and was always smiling, even after a night shift when everyone else was a bit grumpy.

"She was a good listener and couldn't do enough for people, she was a lovely friend and a great bobby."

GMP thanked the public for "their many heartfelt messages of condolence" and said plans are under way to make a book of condolence available for people to sign.

Prime Minister David Cameron said that the killing of the officers was "a shocking reminder of the debt we owe to those who put themselves in danger to keep us safe and secure".