Photo by Jim Herd/SFCitizen SFist sources tell us that the bomb squad has been called to Golden Gate Park at JFK and 30th Avenue Carl Street in Cole Valley at around 6 p.m. Now, which one of you accidentally left your pack back in the park? But seriously, folks, we're not sure what the entire story is yet, or if there even is one, but we'll update when we know more. Stay tuned. Update......

Eeps! The bomb squad has been called over to the Oakland Marina this afternoon. It seems, according to Wendy Tokuda, that a box has been found, adorned with the text "81 millimeter mortar shells." Check out the live, alarmist web cast of the situation in progress here. Is it explosive? Is it a hoax? Will it blow? We'll update you when we find out more, or hear a loud "ka-pow" off in the distance.......