Updated, 1:45 p.m.
Boston and State Police shut Charlesgate East at Commonwealth Avenue and the Bowker Overpass after somebody found a pressure cooker just lying there.
State Police report:
The device was a pressure cooker, appeared to be discarded. Does not appear to have been a explosive device. .
Boston Police report one of their officers doing a detail found spotted the device around 11:35 a.m.
Rick reports the bomb squad blew the pressure cooker to smithereens around 12:45 p.m., in what Boston Police called "a controlled detonation." Police add:
No explosives were found.