NASHVILLE, Tenn. -- Metro detectives may be getting even closer to solving part of the mystery surrounding the death of Marcia Trimble in 1975.

Video: Police Investigate New Lead In Trimble Case

Although convicted rapist Jerome Barrett is a suspect, investigators have had a hard time placing him in Green Hills where the 9-year-old child was found dead.

On Thursday, Channel 4 spoke with Barrett's former parole officer, Jack Curtiss.

According to reporter Jennifer Johnson, some of the things he said were very insightful and police have now contacted him to see if he can help them piece together various details involving Trimble’s death.

"The detectives are looking at every possibility, both physical evidence, witness statements, recontacting old case files. Cold case investigations are very, very thorough,” said Metro Police Chief Ronal Serpas.

Hours after our Channel 4's story aired Thursday evening, Curtiss was contacted by detectives.

Curtiss said he remembers a lot of offenders during that time working for a landscaping company called Geddes Douglas that was located at the corner of Hobbs and Estes Road in Green Hills.

At this location, at least one witness reported seeing Trimble the night she disappeared.

"I did have people that worked or had worked at Geddes Douglas. Whether or not (Barrett worked there) specifically, that I don't remember," said Curtiss.

The landscaping company was just one block away from the Trimble’s house. If Curtiss can help police put Barrett in Marcia Trimbles' neighborhood, it would be powerful evidence to go along with a DNA link.

"I know I would have met with him a couple of times during that whole search period (for Trimble), that period of time between the search and the discovery of the body," said Curtiss.

Channel 4 confirmed on Friday that the tree nursery down the street from the Trimble home used transient work crews supplied by a company called Manpower, which is still in operation.

It may be difficult if not impossible to find records of day laborers especially those on the job more than 30 years ago.