San Francisco Police have issued a shelter in place order for the area near 17th Street and Vermont Avenue after a shooting was reported in the area this morning shortly after 9am.

There's a shooter in or around Potrero Hill UPS office. People hurt. 17th and San Bruno pic.twitter.com/VicvNJyl1k

— lawrence coburn (@lawrencecoburn) June 14, 2017

Three people were injured at the scene; no word yet on their condition. KTVU has reported that the shooting, which took place on the facility's main sorting floor, was carried out by a "current employee."

Avoid the area of 17th Street and Vermont due to #SFPD Police activity. #SF pic.twitter.com/G1jpmm6hE5

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

An eyewitness tweeted that someone drove by the UPS depot and "started shooting rapid fire," causing bystanders to run and scream.

First responders are asking drivers to avoid the area; residents are advised to take shelter in an interior room and avoid windows until the advisory is lifted. 

These employees on the roof were rescued by police pic.twitter.com/3C1NTcAr8o

— Kevin Wood (@megakwood) June 14, 2017

[Update: 10:18am] Police are moving from floor to floor inside the UPS building to secure the facility and evacuate employees.

San Francisco Chronicle reporter Evan Sernoffsky has reported that two people were killed at the scene and multiple victims have been transported to San Francisco General Hospital.

[Update: 10:40am] A source has told Hoodline that the shooter was injured and is in custody at SF General.

One of the victims, a 46-year-old man who drives for UPS, succumbed to his injuries after he was shot multiple times while trying to help others escape.

The shelter in place has been lifted. #SFPD Special Ops is continuing to search the building for additional victims and witnesses. #SF

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

[Update: 11:35am] ABC7 has reported that the gunman fatally shot himself after the initial shooting. Police have lifted the shelter in place order.