Investigators are asking the public to study the man's facial features and contact them with any information on him.
Investigators with the Indiana State Police released a composite sketch Monday of the suspect believed to be involved murders of Abby Williams and Liberty German back in February.
He's described by police as white, 5'6"-5'10", weighing 180-220 pounds with reddish-brown hair.
Police say they hope the sketch will help clarify some of the pictures that have been released regarding the investigation and the man on the bridge. The hat the man is wearing in the sketch may not be accurate.
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The drawing is the result of information received during the ongoing police investigation by state and Delphi police, the FBI and the Carroll County Sheriff's Department into the deaths of Abby Williams and Libby German.
Fourteen-year-old Liberty German vanished with 13-year-old Abigail Williams on February 13 while hiking near Delphi, about 60 miles (100 kilometers) northwest of Indianapolis. Their bodies were found the next day. They also released audio of a male saying "down the hill".
There's a reward in excess of $230,000 for information that leads to the arrest and conviction of the person, or persons, responsible for the murders.
That evidence came from German's cellphone.