2004 Toyota Landcruiser oil filter started right after chan

Engine Mechanical problem
2004 Toyota Landcruiser V8 Four Wheel Drive Automatic 63K miles

I took this land cruiser to a toyota dealership in canada for a simple oil and filter change, they changed, I drove it outside less than a km and someone pointed the leak on the road, I took it back to the dealership right away, and returned the truck to them. They said to me there is a sound now like a click kind of sound coming from the bottom part due to oil drained. They said they will fix the truck as they have to order parts from toyota USA. What could have happened to the engine? What are the possible damanges to the engine? Do I have to keep an eye on certain area of mechanism now and ask them? I need a strong advice as to what are the other things I should keep an eye on and confirm with toyota dealership when they hand me over my car back in a week?
I have a feeling that they have used the wrong size filter and it just came out while driving