Fire tears through farm shed north-west of Sydney's CBD

Flames tore through a shed filled with farming equipment in Riverstone, north-west of Sydney, last night. 

Fire crews were alerted to the blaze at Garfield Road East shortly before 8pm and arrived to find the building well alight.

Crews were forced to deploy extra tankers from a rural fire service to pump water.

No injuries were reported.

Firefighters are still working to establish the cause of the blaze, however it is not believed to be suspicious.