The victims included a 67-year-old man, three women and two children.
Six family members were reportedly murdered by someone from another family around midnight on Wednesday in Juttada, in Pendurthi Mandal, on the outskirts of the city.
Defendant B. Appalaraju and his family have allegedly had family disputes for some time. The police have taken the accused into custody. The victims included a 67-year-old man, three women and two children.
Police Commissioner Manish Kumar Sinha visited the scene. He has also formed a special team to investigate the case. Further details are expected.