i have seen it after I stept of the boot end I don`t know where he is.
>After being first seen in the Burned Tower, it runs to Cianwood City, Mt. Mortar, Vermilion Harbor, and Route 14 before giving itself up at the end of Route 25 after defeating Misty. If it is not caught, Suicune can be found in the Burned Tower after defeating the Elite Four again.
Source:Where I found the Suicune Information at game data :P