Counter terror police officers have said the suspect package found at Glasgow University is linked with devices discovered around London.
Bomb disposal officers detonated the item after it was found in the mailroom on Wednesday morning.
Staff and students were evacuated from buildings and no-one was injured.
Police Scotland is now “working closely together” with officers investigating finds at Heathrow and London City airports and Waterloo station.
Assistant Chief Constable Steve Johnson of Police Scotland said: “The package sent to the university was not opened and no-one was injured. A controlled explosion of the device was carried out this afternoon by EOD.
Source: BBC News