A spokesman for Police Scotland said: "Police in Edinburgh can confirm that the emergency response at the Scottish Parliament has been stood down".
Four packages of white powder that sparked security alert at Scottish Parliament are not being treated as suspicious, police have said.
"Thankfully it appears to have been a false alarm in this case and the substance was found not to be unsafe. Staff are working to assess the situation".
'Police are in attendance at the scene.
"A lot of MSPs were in committee meetings so it was mostly staff in the building".
"As a precaution the MSP building was evacuated".
According to the Mirror, a suspicious substance was found in a letter sent to an MSP's office, RT reported.
The parliament said later police inquiries had concluded there were no suspicious circumstances surrounding the incident and that no crime had been committed.
The Scottish parliament has confirmed that evacuation, with police dealing with the incident that occurred at 11.30 am local time.
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Two additional envelopes were sent from the same sender to Conservative MSP's Liz Smith and Edward Mountain, but they were not opened.
"This is part of a pre-arranged process put in place, ready to deal with such developing situations".
The vehicle entry system had been closed to enable emergency services access, the chief executive said.
"The public are thanked for their patience and support during this matter".
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An arrest warrant obtained by Courier Journal stated that Boucher allegedly "tackled him from behind". An automated phone system at the jail did not provide access to lawyer information for Boucher.