Many thanks to @TabRag for tweeting their link!
It looks like Keanu Reeves has surfaced. It is not clear where or when these photos were taken but they appear to be new and he is wearing the jacket that he was wearing at LAX on Sunday night.
You can view the two photos here. I will update if I find more.
Note: The info posted with the photos at WENN indicate that they were from March 30 at LAX. It is not clear if he was coming or leaving. Now that I have taken a good look at them, it looks like he is walking away from the car and into the building so I am assuming they were from his arrival at the airport. Regardless, the his whereabouts are still unknown. Many thanks to Jean Rea for supplying the date and location.