Jet fuel spilled in a crash Sunday may have spread further than previously thought.

On Sunday a tanker truck flipped on the 401 near Highway 6 just before 2 a.m.

Approximately 50,000 litres of fuel spilled from the truck and made its way into nearby waterways.

On Thursday the Grand River Conservation Authority (GRCA) said it was advised by the Ministry of Environment, Conservation and Park that the contaminants from the jet fuel spill “have migrated further downstream in Mill Creek than originally understood.”

It’s not yet clear what actions will be taken to track and address the spreading problem.

Teams have been working day and night to clean up the spill in the area surrounding Mill Creek, near Concession 2 and Sideroad 20.

Containment booms have been set up to absorb any fuel travelling downstream.

Vacuum trucks have also been sent to the scene to clean up the fuel from the soil.

John Johnston owns property next to the creek.

“I’ve seen ducks yesterday that couldn’t fly. I’ve seen mink that are trying to clean the goop off of them.”

Wildlife Haven Waterloo says they’ve received hundreds of messages from residents concerned about the wellbeing of animals in the area.

On Thursday a group of volunteers visited the spill site and used a drone to try and track down any animals in distress.

The organization says they have been contacted by Procter & Gamble who have offered to donate all the Dawn soap volunteers need.