Shreveport, La. ? A Kansas City comic book creator and self-described crime-fighting activist is trying to bring attention to his great aunt’s unsolved murder in Louisiana.

At age 82, Angerleane Allen was robbed and strangled on May 14, 1996, but Shreveport police have been unable to solve the case. She was found by someone with Meals on Wheels inside her Ledbetter Heights home.

Now, Allen’s 42-year-old nephew, Alonzo Washington, wants to see if he can help police. Washington is the founder of Omega 7 Inc., a comic book company, and he’s helped police solve other crimes.

“She was my great aunt, Aunt Sweetie,” Washington said.

He has made a Facebook page and a YouTube video about the case in the hope to bring tips in.

“I did this to hopefully drum up a number of tips,” Washington told The Times newspaper. “I’m the activist I am today because of my Aunt Sweetie, and in memory of her, it’s just a goal of mine to hopefully bring her killer to justice. And if nothing more, I want to remind people that something bad did happen there.”

The Times reports that police have worked hard to find out who killed Allen and at least two people were developed as “persons of interest.”

But Bill Goodin, a police spokesman, says detectives were unable to compile enough evidence to make an arrest. More than 40 supplemental reports on the case have been written by investigators, the latest as recently as 2007.

“We are hoping that somebody out there will come forward and help us bring justice to Ms. Allen and her family,” Police Chief Willie Shaw said. “It is hard to fathom how someone could bring themselves to hurt an elderly person like Ms. Allen and whoever is responsible for her death needs to be locked up.”

People who knew her say Allen was a warmhearted and cheerful entrepreneur, a seamstress and a teacher who was not known to have any enemies.