Six teenagers have discovered a bag containing a foetus in part of the old Stobhill Hospital.
A police investigation was launched after a video of the find was posted on the internet earlier this week.
A spokesperson for NHS Greater Glasgow and Clyde said that the facility had been used to “store artefacts” and had been broken into over the weekend.
But some have questioned whether the item should have been in the building and how secure it was.
Three 13-year-olds and three 14-year-olds have now been reported to the Scottish Children’s Reporter.
The last wards in the old Stobhill Hospital were finally closed in 2011, with the hospital’s maternity unit closing in 1992.
The ‘New’ Stobhill Hospital, an Ambulatory Care and Diagnostic Hospital (ACAD), opened in June 2009.
But many parts of the old hospital are still left standing alongside the new facility.
A police spokesperson said: “Six youths, three aged 13 and three aged 14, were arrested on Wednesday, August 17, in relation to alleged theft by housebreaking at Stobhill Hospital.
“A report will be sent to the Scottish Children’s Reporter Administration.”
The NHSGGC spokesperson said: “A locked building within the Stobhill Hospital site was broken into at the weekend. “The secured facility is used to store artefacts, all of which comply with relevant legislation.
“The matter is subject to an ongoing criminal investigation.”