Is Lasse Sandberg Now a Ghost?

Swedish cartoonist and children's book illustrator Lasse Sandberg has passed away. Among other characters, he created the friendly little ghost Godfrey, who is called Laban in the original Swedish books. Godfrey was the ghost who did not want to scare people. I wonder if Lasse Sandberg is a ghost now himself. If so, I believe he would be a friendly ghost himself.