SFFD is asking residents near Crocker Amazon Playground to remain indoors and keep their windows closed as firefighters work to put out a 2-3 acre grass fire.

The shelter in place order was issued around 1:25pm and includes John McLaren School, which adjoins the park. No injuries have been reported, but the blaze is reported to be near several homes.

Smoke is visible as far away as Brisbane; drivers are encouraged to avoid the area to keep streets clear for emergency vehicles.

We'll continue to update this story as it develops.

The entire crocker amazon park is scorched black and on fire. Insanity pic.twitter.com/p1mUul1US1

— Meg B (@megha) July 7, 2017

Crocker amazon fire happening now pic.twitter.com/2zP2qBID4y

— Jordan Lam (@strictlyJDM) July 7, 2017

[Update: 2:10pm] SFFD has upgraded this to a 2-alarm fire, which means more units have been dispatched to the scene.

[Update: 3:25pm] The department's public information officer announced on Twitter that the fire, which spread to 23 acres, is now under control. No injuries were reported, and no structures were damaged.

#070717WF1 UPDATE FIRE UNDER CONTROL 23 acres no injuries no structures involved Shelter in place lifted 1512 Hrs pic.twitter.com/oKxNKYYCtz

— San Francisco Fire (@sffdpio) July 7, 2017