More tests over girl's 'drug' death
Further tests will be required to establish the cause of death of a 16-year-old girl who died a few hours after falling ill at a house party.
It is thought the teenager, who has not been named by police, took an "ecstasy-type drug" at the party in Rutherglen, South Lanarkshire, on Friday.
Police said it remained unclear whether the teenager died as a result of taking drugs or from natural causes.
Officers said they had contacted many of the teenagers who were at the party.
Ch Supt Ciorstan Shearer said: "I know that this is a very painful and upsetting time for the girl's family and friends and Police Scotland will do all that we can to support her family at this difficult time.
"I do not yet know whether or not drugs have played a part in this tragic death and it is therefore important to trace other partygoers to establish that they are safe and well.
"At this time we know that there were around 40 to 50 other teenagers at this party in Rutherglen and we have managed to speak to a significant number of them."
She added: "It is vital however that those who have not already spoken to police, come forward as soon as possible, first and foremost to ensure that they are safe and well, but also because they may be in a position to provide vital information to assist the ongoing investigation."
NHS Greater Glasgow and Clyde Consultant in Public Health Medicine, Dr Anne Scoular, said: "Many drugs are unregulated and no-one knows what they contain or the effects they may have. People offered drugs should think very carefully before taking them.
"I would urge anyone who has taken drugs and experiences symptoms such as a high temperature, aggression and muscle pains or begins to feel unwell or feels a more intense high to seek immediate medical help."