Police also say a neighbor heard an argument at the family's home that night, and investigators said they discovered traces of possible blood on a baby blanket, in a bathtub and in a sink there.
Wilson first called 911 at 12:02 p.m. Aug. 27, 2014, telling dispatchers, "I've just been robbed and someone took my daughter ....I mean my son," according to an affidavit for probable cause released to Crimesider by the Marion County Prosecutor's Office.
When police arrived, they found Wilson lying in the alley, according to the affidavit.
Wilson told police he was walking in the alley around noon near downtown Indianapolis, holding his son, when he was approached by a man and a woman who pulled up in a blue car. He said the man pointed a gun at him, forced him to empty his pockets and hit him in the head with a gun, according to the affidavit.
Wilson said the man told him, "I am not going to hurt the baby and I am not going to shoot you," before striking him.
Wilson said he blacked out for 10 to 15 seconds, and when he woke up, he claims he saw the blue car pulling away. He told police he saw the woman in the back of the car, carrying Delano's blue blanket, and assumed she was holding the child.
A massive search for the boy ensued as authorities canvassed the neighborhood. State, local and federal officials responded, but there was no sign of the infant. Authorities issued an Amber Alert and used canines in the search. Wilson worked with police to develop sketches of the suspected man and the woman, and local and national media outlets covered the apparent abduction.
As police began to further question Wilson, however, they say his story fell apart.