Matthew Sharpe, 40, was arrested on January 8 after officers were called to a violent incident at the home address of Andrew in Houghton Road, St Ives. On arrival they found two people had been attacked with a knife. Andrew could not be saved and died at the scene. Sharpes ex-girlfriend, Charna Knights, 27, from Huntingdon, suffered serious injuries and was taken to Addenbrookes Hospital in Cambridge for treatment. She was released two days later on January 10. Detectives were told how one of Andrews neighbours had gone round to the house after he heard a commotion going on inside. He was confronted by Sharpe on top of Charna, repeatedly stabbing her while Andrew lay severely injured on the floor. The neighbour managed to pull Sharpe off Charna and kick the knife out of his hand before restraining him, however he managed to get away. The neighbour left the house to call for help. Police were deployed and while on route to Houghton Road another officer reported they had stopped a silver Peugeot at the Harrison Road Bridge over the River Ouse, in St Ives, and the suspect had jumped into the river. He was pulled out and found to have self-inflicted injuries. Sharpe was taken to hospital where he remained for two nights before being transferred to Parkside Police Station in Cambridge on January 10 and charged with murder and attempted murder. Detective Inspector Lucy Thomson, from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit, said: Charna suffered multiple stab wounds and thankfully made a recovery, however medics were unable to save Andrew. I would like to pay tribute to the selfless bravery of Andrews next-door neighbour who put his own life at risk in order to help Charna, his actions that day ultimately saved her life. Sharpe, of Humberley Close in Eynesbury, St Neots, appeared at Cambridge Crown Court this morning (Friday, March 10) and pleaded guilty to the murder of Andrew Hasler and the attempted murder of Ms Knights. He will be sentenced at the same court on April 7.