The last photo posted to social media by murdered teens are rumoured to show their killer lurking in the background.
Abigail Williams, 13, and Liberty German, 14, were found dead last month after failing to return from a walk near the Monon High Bridge in Indiana, USA.
The teenagers were active on social media in the hours before their deaths, with Liberty even posting an eerie photo of Abigail walking along the secluded railway track.
In the background of the picture is what looks like a dark figure standing at the edge of the bridge - sparking rumours that this is their killer, already stalking the pair.
The police have confirmed their suspect is the man whose voice featured in a recording Liberty was able to make on her phone.
They suspect it belongs to a man dressed in a blue jacket and jeans who appeared in Liberty’s social media posts after she became worried that he was following them. They haven’t ruled out that more than one person might be involved.
There is a $200,000 reward for information leading to an arrest.
Meanwhile the attacker or attackers remain at large, leaving their rural community in fear.