UPDATE Feb. 22, 2017: Investigators released an audio clip of the voice of a suspect in the homicides of two Delphi teenagers, WXIN-TV reports.

Click here to listen to the audio clip: Delphi_male_voice_loop

via WXIN

DELPHI, Ind. -- (WXIN) -- Indiana State Police say a man photographed on the trail where two murdered Delphi teens were last seen is now considered "the main suspect" in their killings. The man previously had been considered a person authorities wanted to speak to in the investigation of the killings of 14-year-old Liberty German and 13-year-old Abigail Williams. Delphi resident Mary Harrington says she saw a flurry of activity, with local, state and federal officers and agents rushing in and out of the municipal building Sunday. "I was hoping that meant they had detained someone," said Harrington. "It’s a worry for this community. It’s a worry for everybody." Just hours later, state police said that preliminary evidence led authorities to the conclusion that he's a suspect.

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FULL STORY: Man photographed on trail now officially a suspect in murders of Delphi teens - WXIN