Neighbors heard screams coming from Jessica Sanchez Landaverde’s San Francisco home as she fought for her life, but no one called 911 for several hours.

Instead, Sanchez Landaverde was left alone with a sadistic intruder who strangled her to death, and left her in a pool of blood on the morning of Nov. 23, according to harrowing new court documents.

The chilling timeline details were revealed by prosecutors ahead of the arraignment of Cassidy Wyatt Allen, a 45-year-old homeless career criminal who was roaming free on a deferred judgment deal for a previous assault.

Cassidy Wyatt Allen, who was charged with murder and residential burglary, as well as a special-circumstance allegation that the murder occurred during the commission of a burglary, pleaded not guilty. Del Norte Sheriff's Of

See Full Page