That makes more sense then.

If the house was abandoned and they recieved a suspicious activity report that should be enough to allow them to enter the building legally.

It's no different than lets say......

Your neighboor reporting a robbery at your home while you are not home. Obviously LEO must enter the home to see what's going on. If they see/smell anything while this is going on you can certainly get introuble.

But the police can't make something up just to enter a home. That's ILLEGAL and will cause instant dissmissal of any charges brought to in a court of law.

Why do you think some people who comit horrid crimes get their cases thrown out of court? Because LEO did something illegal.

A good lawyer would make the prosecutor/LEO prove the report was legit.
Make the dispatcher appear in court and take a look at the report logs to make sure things add up.

It wouldn't be hard to prove whether a legit call of concern was reported or not that led up to the search and siezure of illegal items in your home.