INDIANAPOLIS -- Thursday marks the one-year anniversary of a quadruple murder that remains baffling to police.

The murders happened on the 3100 block of North Harding Street on the west side.

That's where, on the morning of March 24, 2015, a relative found the bodies of Tiara Turner, Davon Whitlock, Terrie Betties and Sherry Taylor.

Police said all four victims had been shot no less than six times each, and all were shot at least once in the head.

MORE | 5 months later, northwest-side quadruple murder unsolved | Four bodies found inside home on city's near-west side |Harding Street quadruple murder house to become center for mentoring and mediation

Police aren't the only one's frustrated that the case remains unsolved.

"In the last nine years, we have close to 300 unsolved homicides," Rev. Charles Harrison, who leads the Ten Point Coalition, said. "I'm frustrated that almost every major African-American homicide last year went unsolved. I'm frustrated by that."

In the months following the murders, police posted flyers hoping to generate leads, but there have been no arrests. Police believe the killer or killers ransacked the home after breaking in and shooting the victims.

"We don't have any witnesses, and very little evidence," said IMPD Homicide Det. Marcus Kennedy. "So where do we go from there? If people won't come forward with information … and obviously, somebody knows something. But they've got to come forward."

Michael Turner's wife was one of those killed. He was left to raise their three children.

"It's hard because I only want to protect my family," Turner said. "I don't want this to happen again to nobody. I hope that somebody please do something about this, because it took a whole family out."

The house remains boarded up, and handwritten expressions of grief on the siding are fading. What remains is frustration that whoever killed four people hasn't been brought to justice.

"We have to work together to get these killers off the streets as quickly as possible if we're going to make these neighborhoods safe from this kind of madness," Harrison said.

Police say that until someone comes forward with information, the murders will remain unsolved.

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