I wish I can help you, can not

"你被警察抓是因为他们认为你打了人,触犯了法律. -lasha"

I think Lasha's suggestion is very good.

YOu have to act as soon as possible. --- I suggest you call the office first thing tomorrow and get an outsider to help you. Be brave to talk to people in English. They are willing to listen!!

GOOD LUCK TO YOU! I hope you get very fair results.