The US Government has warned people not to fill plastic bags with petrol amid panic over a fuel shortage.

A car

A car

A cyber attack on an oil pipeline has sparked concerns about petrol shortages and panic buying with photographs showing long queues forming outside petrol stations.

It has been claimed that people are filling up plastic bags with petrol and the US Consumer Product Safety Commission has taken to Twitter to warn motorists about hoarding the fuel.

In a thread on the social media site, the agency wrote: "Use only containers approved for fuel.

"Follow the gas canister manufacturer instructions for storing and transporting gasoline.

"When using a gas canister, never pour gasoline over or near an open flame.

"Flame jetting is a sudden and possibly violent flash fire that can occur when pouring flammable liquids from a container over an exposed flame or any other ignition source.

"NEVER pour flammable liquids from a container over an exposed flame."