Authorities removed a 3-foot-long pipe bomb from a vehicle on the Mayo Clinic campus in Rochester.
 
Traffic near the clinic was diverted Thursday as authorities removed the pipe bomb from the trunk of a vehicle inside the Generose Building parking ramp on the Saint Marys Hospital campus.

The pipe weighed 50 to 60 pounds and had caps on each end and a wick. Crews pried open the trunk and took the bomb to a safe location to detonate it.

KTTC TV reports that a Winona County woman found the bomb in her yard and placed it in her vehicle's trunk and then went to the Mayo Clinic to visit a friend. That's when she told a security officer about the device.

Winona County Chief Deputy Sheriff Ron Ganrude told Winona Radio News his department went to a residence near Utica where the bomb was originally found to check for any other devices but none were found.

Mayo officials said there was no stated threat to the facility and no patients or staff were at risk.