The 18-year-old men had both been at the SWG3 nightclub on Saturday where DJ Ben Hemsley was headlining.

The event - within the venue's Galvanisers Yard - took place between 2pm and 10pm. An afterparty was then held indoors until 3am on Sunday.

One of the teenagers became unwell in the Constarry Road area of Croy, North Lanarkshire, at around 11.20pm on Saturday.

He was taken to University Hospital Monklands in Airdrie, where he was pronounced dead a short time later.

The second man collapsed at the music venue at around 2.20am on Sunday.

He was taken to the city's Queen Elizabeth University Hospital, where he too was pronounced dead a short time later.

One line of inquiry for police is whether the deaths are drugs related. Further enquiries are ongoing to establish if the deaths are linked.

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A Police Scotland spokesperson said the men's next of kin had been made aware.

The force added: "Enquiries are ongoing to establish the full circumstances."

A spokesperson for SWG3 said: "We are devastated at the news and our deepest sympathies are with the families.

"We will continue to assist the police with their inquiries."