Another woman drove the pair to the site of the robbery but has not been charged, court documents show. All three recently lived in Cahokia, Freund wrote.

Sprandel told the Post-Dispatch in March that the couple were celebrating their one-year anniversary and lived on Cherokee Street.

Sapone had served in the Navy before he began working at MilliporeSigma, a pharmaceutical business. He also had a side photography business.

Sapone's fiance, Sprandel, said she was relieved by the charges.

"I got the news and cried for hours for joy, relief for Anthony," she said. "I don’t want them to ever be able to do this again...I wish I knew the why’s and what’s of their crimes."

Sapone’s sister Frankie Sapone-Henderson thanked police Tuesday.

“I’m so terribly grateful for the diligence and tenacity of the St Louis police department for continuing the fight to find my brother’s killers regardless of the insurmountable case loads they currently have,” she said in a written message to the Post-Dispatch.

Sapone-Henderson said she would miss her brother’s dry wit and their in-depth conversations. “Rest in peace, little brother,” she added.

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