A woman was airlifted to hospital having been stabbed in a quiet residential street in Peterborough on Saturday night.
Police were called at just after 8pm on Saturday, June 23, with a report of a man with a knife at a property in Viney Close, Eastfield, Peterborough.
Armed officers responded and found a woman in her 50s at the property with stab wounds.
She was airlifted to hospital and remains in a critical condition.
A scene has been put on the property and an investigation has been launched.
A 56-year-old man has been arrested and is in police custody.
Anyone with information should call police on 101 quoting incident 401 of 23 June or visit www.cambs.police.uk/report.