What is this exactly?

A bright, red X was on my mini map. I ran to it and found this. I scanned the body and the katana stuck in it.

Is this important? Am I able to take the damaged katana? What have people done when they found this?

A bright, red X was on my mini map. I ran to it and found this. I scanned the body and the katana stuck in it.

Is this important? Am I able to take the damaged katana? What have people done when they found this?