A severed human leg

Well my friend and I were chatting enthusiastically about anime while going home until we saw a huge crowd near the river. Curious, we looked at their direction and it so happened my friend and I saw a bucket with a severed extremely pale human leg. We froze until the sight got blocked by the crowd again. We heard convo of other people saying the leg was found floating on the river. They are still trying to find if there are other severed parts...