I had installed cameras at a business(A) long time ago in a bad neighbourhood. There is a small store(B) accross the street. According to the police the clerk is selling dope and want to catch them with evidence.
They want me to have a camera pointing from A to B, so that they can see and record the cashiers transactions. Are there any legal ramifications to this setup? Need advice soon!!

Are the police not capable of doing their own covert ops?

Sounds iffy to me, are they expecting you to do this for free?

Will they expect you to testify?

Will they provide witness protection if anyone gets nasty?

Have they made this a formal request, in writing?

Are the police not capable of doing their own covert ops?

no!

Sounds iffy to me, are they expecting you to do this for free?

going to pay cash

Will they expect you to testify?

no.

Will they provide witness protection if anyone gets nasty?

I am not sure.

Have they made this a formal request, in writing?

no.

i think that is against the law.. .. they probably need a court order from a judge to start with.

It depends. If he is looking in to the bussiness via a window with the camera he's okay. If he installs them inside the building...yeah, that violates a ton of laws.

I am sure as far as residential installation is concerned you cannot have the cameras covering you neighbours backyard. I am not sure about a commercial install. i can just install the camera and walk away saying that store A changed the position to look into store B. Still not sure what to do...