(CNN) Police were dealing with multiple reports of suspicious packages in the UK on Wednesday, a day after three improvised explosive devices were discovered at London transport hubs.

Specialist officers were assessing an item found inside a courtyard at the UK Parliament that was later deemed to be non-suspicious.

Police in Scotland destroyed a package that was discovered in the University of Glasgow's mailroom and were called to investigate another that was received at a branch of the Royal Bank of Scotland in Edinburgh. That package was later found to pose no risk to the public.

They said the package was linked to similar parcels sent to London earlier this week.

"There are similarities in the package, its markings and the type of device that was recovered in Glasgow to those in London," Assistant Chief Constable Steve Johnson said in a statement. "Therefore, we are now treating it as being linked to the three packages being investigated by the Met in London and both investigations are being run in tandem."

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