An elderly woman has been questioned by police after apparently storing her mother's body in a freezer for up to 20 years. Officers interviewed Daulat Irani, 83, under caution after the grim discovery at the property in Sidcup, south-east London. It is understood the body was formally identified as that of her mother Gulbai Freedoon Murzan, who was born in 1901. Officers believe she could have been dead for up to 20 years. Her death is currently being treated as unexplained rather than suspicious, said a Metropolitan Police spokesman. Post-mortem examination results are expected later this week. Officers were initially called to the property in Park Mead on May 20 after being alerted by a neighbour. Forensic officers moved in to remove the well-preserved corpse. Ray Dyson, 77, who lives nearby, said Ms Irani was a "nice old lady" who went quietly about her business. He said: "This has all come as a bit of a shock. The first we knew was when two police cars and an officer in a full forensic bodysuit turned up. They taped off the garage and have now put a padlock on it." A police spokesman said: "The death is being treated as unexplained rather than suspicious. There have been no arrests and an 83-year-old woman has been interviewed under caution."