Tributes have been paid to a "really lovely" 14-year-old girl who died at the weekend following a party.
Police Scotland said they received a report that the teenager, understood to be Zoe Bremner, had died in Dundasvale Court in Glasgow at 12.45am on Sunday.
A boy and a girl, both aged 15, who were also at the property were treated at the city's Queen Elizabeth University Hospital after becoming unwell but they have since been discharged.
Read more: Girl, 14, dies and two teenagers in hospital after falling ill in Glasgow
Police say their investigations have revealed the teenagers were at a party in the Yoker area late on Saturday afternoon.
They returned to Dundasvale Court in the evening and in the early hours of the morning they contacted emergency services.
One line of inquiry in the police investigation is whether the incidents may be drug related.
Kay Dingwall, headteacher at Knightswood Secondary, said: "This is such tragic news and our heartfelt sympathies and prayers are with Zoe's family and friends at this extremely sad time.
"Zoe was a really lovely girl and will be sorely missed by all the staff and pupils at the school.
"We will do all that we can to help and support young people and staff who will obviously be deeply affected by this saddest of news today and during the difficult days ahead."
Read more: Girl, 14, dies and two teenagers in hospital after falling ill in Glasgow
Police are appealing for anyone with information about the incident to contact them.
Detective Inspector Greig Wilkie said: "This is very disturbing and our thoughts are with the family at this distressing time. We are currently carrying out extensive inquiries in relation to the incident.
Read more: Girl, 14, dies and two teenagers in hospital after falling ill in Glasgow
"Our investigation will include whether any substances have been a factor in this incident. If anyone has any information which could assist our investigation, I would urge them to contact us."
The death is currently being treated as unexplained.
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