Seeing Red

The police heard the scream of the owner and they saw same red the landlord was pointing at with his eyes wide open. One of the officials switched on the light to grasp the situation, there was red color liquid falling in drops on the floor, which led them to open the refrigerator where they found more of it. No one knows what it was that brought the chills to their spines, was it the refrigerator or what was inside the refrigerator?