Could Kohberger have planted bloody glove or blood on handrail?

With Kohberger being a PHD and him asking "was anyone else arrested?" does anyone think he may have planted the glove and the unknown person's blood on the handrail? As soon as he asked if someone else was arrested my thoughts went to him planting evidence to make it look like it was somebody else. Why would there be a bloody glove by the sliding glass doors and blood on the handrail? Do people generally have objects with blood all over them around their house?