Oil residue above the alternator on 2021 CX-5

Hello everyone, I am new here.

I own a 2021 Mazda CX5 with about 50k miles. There is a black residue above the alternator.

At first glance, it looks like oil though I am not sure if it is coming from the belt tensioner or timing chain cover. (I could not see any visible oil spots under the engine bay..)

Has anyone else dealt with this type of issue on CX-5?
- What issues do you think this might be related to?

Any insight would be very helpful. Thank you!

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