Joshua’s girlfriend Aisha McNellie appealed for information.
“We, Josh’s family, have come up against a brick wall and cannot move forward. We need your help to bring us closure to this heart-wrenching and horrific situation.
“We may have laid Josh to rest but we can’t rest as we are in torment.
“Joshua was a well-loved young man, who was beginning to make a positive contribution. He was applying for university and making a home for his family, who were his greatest joy and achievement. He has two beautiful children who are now fatherless through no fault of their own.
More top news
Remaining mostly dry tonight. An improving story from the north on Sunday. Staying breezy.
Police have released CCTV in a bid to catch the thieves who raided a children's play centre, taking money from collection boxes and a till.
Cuillin, six, and four-year-old Lejla designed the memorial plaque to their mum that has been installed in the Commons chamber.