TULSA, Oklahoma - The daughter of a man beaten to death in downtown Tulsa said she's not giving up on finding his killer.

He was killed 24 years ago, and detectives said they don't have any leads, but she’s hopeful that someone knows something.

Kim Sweet's father, Robert Alexander, was found dead along a stretch of road under what was the 6th Street Railroad Bridge.

"I feel like my dad deserves justice. His case is just as important as a murder today," Sweet said.

She’s spending her week of vacation here in Tulsa, hoping to find a lead in her dad's murder case.

The trouble is, she doesn't know much about him.

Her parents divorced in 1973 in Indiana, and that was the last time she saw him.

Sweet said, "I never considered that there was a day that my dad wasn't going to come back and get me. And I looked for him every day, and it just crushed me when I found out that this was it, that, you know, he had died."

Alexander became homeless sometime after he moved back to Tulsa from Indiana; and on March 9, 1990, he was found beaten to death under the railroad bridge on East 6th Street downtown.

It happened just months after Sweet and her siblings hired a private investigator to look for him.

"We didn't realize how close we were. He went to the Day Center Homeless Shelter and because of my dad's upbringing he [private investigator] just didn't think it was possible that he would be there. So we were very, very, close and we did not know it," she said.

The Tulsa cold case division has been following up on evidence from the case for a couple of years now, but, so far, doesn't have any new leads.

Sergeant Dave Walker said, "The things that we've done has reduced the chances of us solving it from our standpoint. We've looked at additional DNA and it's not there, we've tried to research some other witnesses and reach out to them, we can't find them."

Sweet is just hoping for even one tip, something for police to go on.

“My hope is that someone is going to call in and say something. Maybe they were scared then and they aren't scared now, or maybe they remember something, but I absolutely think that this case can be solved," she said.

Until then, Sweet said she won't give up.

If you know anything about the crime or any other cold case, contact Tulsa police.

The cold case division will also have a booth set up at the Tulsa State Fair starting next week.