Initially the leaves didn't really have brown spots, they were just falling off tree. Not sure what kind of tree it is. It has burgundy leaves and it flowers little white flowers in the spring.
The brown spots on the leaves which are still on the tree are becoming holes. Then the leaves fall off tree. Also noticed small "groups" of leaves dying but not falling off tree. Seems like the small branch was cut or something at the base where it joins a larger branch.