Boyfriend beats tot boy to death after mom leaves for work. The boy was found with eye hemorrhaging and human bite marks

A California man was sentenced to at least 32 years in prison on Tuesday for the 2014 death of his girlfriend’s 18-month-old son—who paramedics found unresponsive and covered in human bite marks.

Left to care for Dante Nava as his mother worked, Marco Antonio Alvarado-Cisneros, 27, called 911 on August 12, 2014, and reported that the toddler wasn’t breathing and was unconscious. Though he claimed Nava possibly fell off the bed and suffered a seizure, an autopsy revealed that Nava had brain and eye hemorrhaging, bruising in various stages of healing, and a “massive subdural hematoma.”

The little boy also had human bite marks from an adult, according to the Daily Post.

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Nava’s mother was initially uncooperative with the criminal investigation. She continued to live with Alvarado-Cisneros and had a child with him in May 2015. Around a year later, she revealed that he abused her, robbed her, and kidnapped her, according to KPIX.

Alvarado-Cisneros was arrested in September 2015, following a year-long investigation. He was convicted in April of involuntary manslaughter and assault on a child causing death.

According to the Daily Post, District Attorney Steve Wagstaffe described him as having “zero reaction, totally flat” as the jury handed down guilty verdicts.

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[Featured Image: Marco Antonio Alvarado-Cisneros/Handout]