A suspicious package sent to the University of Glasgow on Wednesday is believed to be linked to explosive devices found in London on Tuesday, Police Scotland has said.
A controlled explosion was carried out on the package, which was found in the mailroom at Glasgow University, after several buildings had been evacuated.
It comes after explosive devices were sent to Waterloo railway station and offices at Heathrow and London City Airports on Tuesday.
Sky News reported that sources had said the Met Police are linking the devices, potentially because there were some similarities between the one in Scotland and the other three.
An investigation is underway to identify those behind the explosive packages, which were posted with Irish stamps and had Dublin as the return address.
Deputy Assistant Commissioner Dean Haydon, the senior national co-ordinator for counter-terrorism policing, said on Wednesday that no link had been made with Irish dissidents at this stage.
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Security sources suggested the packages’ Irish insignia may have been a “concerted attempt” to make them appear as though they were posted from Ireland, but could not rule out that they had been.
Asked whether there could be more packages, he replied: “They were sent through the postal system so we are not ruling that out.”
The Met has released images of the packages which have been circulated to transport workers and postal sorting staff across the country.
All were A4-sized white postal bags containing yellow Jiffy bags and appeared capable of igniting a small fire when opened.
Commander Clarke Jarrett, head of the Met’s Police Counter Terrorism Command, said: “We have issued extensive advice to transport hubs and mail sorting companies to be vigilant for and report suspicious packages to police, as always we encourage anyone who sees something suspicious to report it.”