Affidavit: Stepmother killed Gannon Stauch in his bedroom; blood found in her SUV

EL PASO COUNTY, Colo. (KDVR) -- Letecia Stauch killed her stepson Gannon in his bedroom and repeatedly lied to authorities during the investigation, according to an arrest affidavit obtained by FOX31 and Channel 2 Thursday night.

The 32-page document that appears to be the affidavit of probable cause to arrest Letecia appeared on social media Thursday. FOX31 and Channel 2 was provided the document and were able to independently confirm its authenticity.

The affidavit alleges that Letecia killed Gannon in his bedroom at their suburban El Paso County home on Jan. 27. Investigators reportedly found evidence of blood on a mattress, walls and floors of the bedroom. Evidence of blood was also found inside Letecia's VW Tiguan SUV.

On the evening of Jan. 28, Letecia allegedly dumped Gannon's body in a rural area of southern Douglas County, Colo. off of Highway 105 -- something confirmed by DNA evidence gathered in the area.

TRUE CRIME DAILY: Gannon Stauch case coverage - TCD

Letecia Stauch faces 13 charges, including first-degree murder, child abuse resulting in death and tampering with evidence.

Gannon's remains were “tentatively identified" in Florida in March. The affidavit is dated Feb. 28, which is likely why it does not explain how Gannon's body got to Florida.

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• Affidavit: Letecia Stauch killed Gannon in his bedroom, repeatedly lied to investigators - KDVR