Police were called after family members and a neighbour discovered the body of 86-year-old Una in her bungalow in Magazine Lane on Sunday, 13 January 2013.
She had been seen alive two days previously (Friday, 11 January) and had spoken to a friend over the phone at about 5pm on the Saturday, the day before her body was discovered by police.
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The death was initially treated as unexplained but after a post-mortem examination concluded Mrs Crown died from stab wounds to her neck and chest, a murder investigation was launched.