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.

Police say new forensic evidence further implicates Travis Decker in the killings of his three young daughters.

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