Yorkshire has numerous unsolved crimes, some of which date back to the 19th century.
Here are nine of Yorkshire’s most notorious unsolved crimes.
9. Adam Chadwick - Harehills, Leeds
Adam Chadwick was 20 years old when he was shot during a struggle with unknown intruders at his sisters home in Clifton Mount, Harehills, at around 10.40pm on June 24, 2008.His killer has never been found.