hereA uniformed officer was stood guard outside the house.Forensics officers were seen going inside the home on the quiet street, filled with with large, semi-detached properties. Neighbours identified the 'nice, friendly' couple as Mr and Mrs Cooper. They said they had lived on the street for around three years.One person, who asked not to be named, said: "They were a very nice, friendly couple."We didnt know them really well, but would often chat about gardening.