Shock and sadness were at the heart of condolence messages circulated on Monday, after the parents of struggle veteran and education expert Graeme Bloch were found murdered in their home in Mowbray, Cape Town.Rosalie Bloch, 84, and Aubrey Jackson, 94, were found tied up and murdered in their Victorian double-storey home in the quiet suburb on Saturday, May 5.The murder has left the leafy suburb reeling. It is one of Cape Town's safest suburbs, based on recent crime stats.Mayor Patricia de Lille and talk show host Redi Tlhabi also tweeted their condolences on Monday.My condolences to Graeme Bloch on the passing of his parents. We trust that SAPS will act swiftly to apprehend those responsible for the deaths. On behalf of the City of Cape Town, I extend our deepest condolences to his family, friends of Rosalie Bloch and Aubrey Jackson— Patricia de Lille (@PatriciaDeLille) May 7, 2018I am so shaken by this tragedy. Condolences to Graeme Bloch and Cheryl Carolus. Brutal and senseless https://t.co/U6QmqiGf84— Redi Tlhabi (@RediTlhabi) May 6, 2018Police spokesperson Captain FC Van Wyk said detectives were following up leads and crime scene experts were combing the scene for clues. The suburb falls under the Mowbray police station.Mowbray has only recorded 10 reported murders over the past 10 years - from 2007 to 2017.Only three attempted murder cases were reported for 2016/17.Burglary, however, is high in the area, with 230 cases reported in 2016/17 and 2 019 cases reported over 10 years.The family has not yet announced funeral and memorial details.