Four Men Stopped To Urinate On The Island Bridge And Got Arrested

Wonders sha never end!!! Four friends stopped to answer the call of nature on the Island Bridge and decided to take pictures of them during the act. Out of the blues came KAI officials to stop their pissing party and got them all arrested. Well, I find this really amazing and amusing, I'd really like to know if there is any law prohibiting people from urinating in public?