Travis Decker is wanted on first-degree murder and kidnapping charges in connection with the deaths of Paityn, 9, Evelyn, 8, and Olivia, 5

As authorities continue their search for Travis Decker, the Washington state man accused of suffocating his three daughters to death, investigators now believe he is the only suspect in the crime based on evidence found at the gruesome scene.

Travis Decker is accused of killing his three young daughters, whose bodies were found near a campground in central Washington.