Bendall, aged 31, was arrested after officers searched a house in Chandos Crescent at around 7.30am on Sunday, September 19 and found the bodies of a 35-year-old woman, Terri Harris, her son John Bennett, 13, daughter Lacey, 11 and Lacey’s best friend, Connie Gent, also 11, inside.
Derbyshire Constabulary said officers were deployed to the house following concerns for safety.
Damien Bendall, of Chandos Crescent, Killamarsh, is due to appear at Southern Derbyshire Magistrates’ Court this morning for his first court appearance over the deaths.
There remains a heightened police presence in Killamarsh this morning as enquiries into the deaths continue.
The three children whose bodies were found were all students at Outwood City Academy in Stradbroke, Sheffield.