Moira Anderson: Police to exhume Old Monkland Cemetery grave 7 January 2013 Last updated at 12:14 Police are expected to start exhuming a family grave in North Lanarkshire on Tuesday in the search for the body of a schoolgirl who disappeared in 1957. Moira Anderson vanished aged 11 during a trip to the shops in Coatbridge. Bus driver and convicted child rapist Alexander Gartshore, who died in 2006, has been linked to her disappearance. Moira's family believe she may have been killed and buried at Old Monkland Cemetery in the family plot of Sinclair Upton, an acquaintance of Gartshore. She went missing after getting on a bus as she ran an errand to the Co-op for her family. Family suspicions Her body was never found and Scotland's Lord Advocate, Frank Mulholland, ordered cold case detectives to reopen the case as a murder investigation last year. Gartshore's daughter, Sandra Brown, has written a book detailing her suspicions that her late father was Moira's killer. Moira's sister, Janet Hart, who lives in Australia, launched a petition to get Mr Upton's grave exhumed, believing that Gartshore may have dumped her body there in the days before Mr Upton was laid to rest. Last month, a sheriff granted a request from Moira's relatives to open the grave. The exhumation process is expected to take several days and involve specially trained police personnel.