A man hiking in the Idaho wilderness says he was mistaken for fugitive child murder suspect Travis Decker, who has been on the run since May 30.

Decker is accused of killing his three daughters — Paityn, 9, Evelyn, 8, and Olivia, 5 — who were found at Rock Island Campground on June 2 after their mother reported them missing three days earlier, when they did not return home from a court-mandated custody visit with their father.

U.S. Marshal Supervisory Deputy Michael Leigh said the USMS Greater Idaho Fugitive Task Force on July 5 received a tip from a family in the Bear Creek area of Sawtooth National Forest in Idaho reporting the sighting of a man “consistent with the description of Travis Decker.”

“The person believed to be Travis Decker was described as a white male, 5’8″-5″10 wearing a black mesh cap, black gauged earrings, cream colored t-shirt, black shorts, long ponytail, black Garmin style watch, beard and mustache overgrown, wearing a black Jan Sport backpack and either converse or vans low top shoes,” the USMS said in a July 7 press release.

The U.S. Marshals Service is offering a $20,000 reward for any information leading to Decker’s arrest. 

Fox News Digital’s Julia Bonavita, Michael Dorgan and Michael Ruiz contributed to this report.