Contact the police, obtain their official complaints procedure and follow it to the letter for starters.
Also, do all of the written communication for your friend and make sure you spell check and grammar check everything you do. I say this because from the above it's obvious his English isn't fully fluent and it looks better if it is. Also, if you write from a more dispassionate viewpoint, it will appear as if he is "getting help". It'll make the cops adopt a by the book approach in case the help is coming from the legal sector.
Contact the police, obtain their official complaints procedure and follow it to the letter for starters.
Also, do all of the written communication for your friend and make sure you spell check and grammar check everything you do. I say this because from the above it's obvious his English isn't fully fluent and it looks better if it is. Also, if you write from a more dispassionate viewpoint, it will appear as if he is "getting help". It'll make the cops adopt a by the book approach in case the help is coming from the legal sector.