San Francisco police late Monday shut down Valencia Street from 20th to 23rd streets in the Mission District while officers investigated a suspicious device.
The device was reported just after 4 p.m., and police deemed the scene safe nearly four hours later.
The area just east of Dolores Park was closed off while a bomb squad investigated the device.
Witnesses also reported seeing officers armed with rifles responding to the scene.
No other information was immediately available.
Photo Credit: Emily Price
Source: NBC Bay Area