[Update: 4:28pm] Bay City News has reported that two people were detained after a shooting took place shortly before 3pm this afternoon on the 1000 block of Market Street. According to SFPD spokeswoman Officer Grace Gatpandan, both suspects are being questioned by police.

No one was injured in the shooting, which led officials to close an entire block of the city’s main thoroughfare for slightly more than an hour.

According to Karen Sowa, whose office overlooks the intersection at Market & 6th, one of her co-workers told her “he heard something that sounded like gunshots” before building occupants were informed “that there was police activity outside the building and we should refrain from going outside.”

View from my office at 6th and Market #sf. Our building is on lockdown for a shooting - anyone know more details? #tl #sflife pic.twitter.com/EhpPMYJWqG

— Karen Sowa (@sowamazing) September 14, 2017

Police and SFMTA are asking the public to avoid the 1000 block of Market Street between 6th and 7th streets due to police activity.

Avoid the 1000 Block of Market Street (btw 6th & 7th) due to #SFPD activity. Expect possible @sfmta_muni and traffic delays. #SF #SOMA pic.twitter.com/U09avAsQ6k

— San Francisco Police (@SFPD) September 14, 2017

Muni is rerouting service in the area; transit delays are expected. For live updates, follow @sfmta_muni on Twitter.

We'll update this story when more news is available.

ATTN: #SFPD activity at Market & 6th. #SFMuni Market street svc will see delays and reroutes in both directions.

— SFMTA (@sfmta_muni) September 14, 2017