Follow CBSDFW.COM: Facebook | Twitter

FORT WORTH (CBSDFW.COM) – Police are trying to track down a man they say attacked a woman walking her dogs along the Trinity Trails in Fort Worth.

Now a fresh look at his face could be the break detectives need to catch him.

Investigators want everyone to take a good look at a new sketch of the man. The suspect is described as in his early 20s, between 6 feet and 6″2′, around 275 to 300 pounds.

Police have been trying to find him since August 4 when the attack happened that morning.

The woman told police she had just walked by the man who asked her about her dogs. The two then walked in separate directions, but the next thing she knew, he grabbed her around the neck and held a pistol to her head. Police said she dropped to the ground, then ran away.

Juan Roa often runs and bikes along the trails. Ever since he heard about the attack, he’s been extra cautious.

“As I run I have my headphones in, and they’re bluetooth headphones, so I usually have one out and make sure like if someone’s running towards me, approaching me, I make sure and look behind me, and like I’m really aware of my surroundings,” Roa said.

Roa urges others to do the same, but he says they shouldn’t let this scare them away from the trails completely.

“I’ll just be more aware of my surroundings. It’s not going to change like how much I run on the trail. It’s daily exercise. Just being more aware will be more helpful,” Roa said.

(©2015 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)