Mexican authorities say they have detained a drug cartel leader suspected in the 2010 killing of Colorado native David Hartley who was shot while jet skiing on a lake that straddles the U.S.-Mexican border.
CNN reported Salvador Alfonso Martinez Escobedo was arrested last week.
He is accused of being a regional leader of the Zetas drug cartel in three northern Mexican states.
Known as "The Squirrel," Martinez is also suspected of being behind the 2010 massacre of 72 migrants in Tamaulipas in addition to other killings.
Mexican authorities did not release details about why they believe Martinez is connected to Hartley's killing on Falcon Reservoir, which borders both Mexico and Texas.
It is a question that Hartley's widow, Tiffany Young-Hartley said she is trying to have answered.
"We are still waiting to hear from any Mexican authorities and U.S. authorities," she said.
Hartley was 30 years old when he and Tiffany were jet skiing on the lake to visit a half-submerged church on Sept. 30, 2010. They were ambushed by assailants in a motor boat who shot David Hartley in the head.
Tiffany said she went back to try to save her husband but fled the area amid a flurry of gunshots as the attackers pursued her into U.S. territory.
Tiffany said the news of the arrest came as an emotional, "out of the blue" shock Monday.
"The moment I got that I was thrown back to two years ago," she said.
Tiffany said she's been adjusting to life without David for two years, going through counseling and dealing with survivor's guilt.
"This year there's been a lot of healing," she told 7NEWS. "I can see God's grace abundantly in where I am today."