Former H.S. football star questioned in the shooting death of a Pa. teacher convicted in a different murder – did he kill the teacher too?

Former H.S. football star questioned in the shooting death of a Pa. teacher convicted in a different murder – did he kill the teacher too?

It's been over three-and-a-half years since Rachael DelTondo, a well-liked teacher in Aliquippa, Pennsylvania, was gunned down outside her home — and there is still no arrest in the case.

There were initially several leads to follow, including the actions of an Aliquippa High School athlete named Sheldon Jeter. The night of DelTondo's murder, texts suggest that Jeter may have been trying to track her movements. 

"He was obsessed with her," Rachael's mother Lisa DelTondo told "48 Hours" correspondent Erin Moriarty.

Sheldon Jeter's lawyer says his client had nothing to do with Rachael DelTondo's murder. "There's no evidence there that ties him to the crime," Michael Santicola says.

Then this past summer, Jeter was convicted of killing a different friend after a trip to get ice cream. With his arrest and conviction in that case, attention has again been drawn to the unsolved murder of DelTondo.

"The investigation right now is active. My detectives, my prosecutors – are working continuously," Beaver County District Attorney David Lozier tells Moriarty.

The night Rachael DelTondo was gunned down at the foot of her parent's driveway, there were already eight unsolved murders in the city of Aliquippa, Pennsylvania.  

Anyone with information on Rachael DelTondo's murder is asked to call the Beaver County Detective Bureau at 724-773-8569.

Read the exclusive interviews at CBSNews.com ->

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