Yousef Makki, 17, was stabbed to death in Hale Barns on 2 March 2019....
Cash and thousands of pounds worth of cigarettes and tobacco were stolen....
An estimated £20,000 worth of packages have already been recovered....
"Our concern is make sure the Constance, Mark, and baby are safe and well."...
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The incident happened in the early hours of the morning on New Year's Day....
An estimated 27 tonnes of replica clothing, shoes, perfumes and make up have now been ......
Officers believe the man "could assist with enquires"....
