The Carroll County Sheriff's Department, FBI, Delphi Police Department and the Indiana State Police continue to try and identify the person in a sketch released Monday.
According to our sister station WTHR, Indiana State police will be giving an update on their current investigation.
Abby Williams, 13, and Libby German, 14, were reported missing on February 13 after being dropped off along the Monon High Bridge Trail near Delphi to go hiking, but did not return when a family member went to pick them up.
ISP says the evidence being released will include a composite sketch of the suspect.
It's been more than five months since the girls' bodies were found on a trail near the Monon High Bridge.
He's described by police as white, 5'6"-5'10", weighing 180-220 pounds with reddish-brown hair. His eye color is unknown, police said.
Investigators are asking the public to study the man's facial features and contact them with any information on him. No arrests have been made in the slayings and authorities have not disclosed how the girls were killed. They also released audio of a male saying 'down the hill'.
The reward for information leading the suspect's arrest is now more than $230,000. This sketch depicts a hat that might not be accurate. Anyone with information about the murders or person in the composite sketch is asked to call the anonymous tip line at 844-459-5786.
That evidence came from German's cellphone, who police have hailed as a hero for recording potentially crucial evidence.