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Ex-Philadelphia police officer gets at least 8 years in prison for killing 12-year-old Thomas Siderio

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PHILADELPHIA (CBS) — Former Philadelphia police officer Edsaul Mendoza was sentenced Monday to at least eight years in prison for shooting and killing 12-year-old Thomas Siderio in March 2022.

A judge sentenced Mendoza to eight to 20 years in prison Monday. Mendoza pleaded guilty to third-degree murder in April.

Siderio was fatally shot by Mendoza on March 1, 2022, after a chase in South Philadelphia. Mendoza and three other plainclothes officers in an unmarked car tried to stop Siderio and a 17-year-old near 18th and Barbara streets around 7:30 p.m. The officers claimed the 17-year-old had a stolen gun that was allegedly posted on Instagram a week before.

Police alleged Siderio fired a gun at the officers in the car, shattering the rear window. Siderio and the 17-year-old ran in different directions and Mendoza chased Siderio on Barbara Street toward Moyamensing Avenue. Siderio ditched the gun during the chase, police said.

Mendoza fired three shots at Siderio during the chase - one at 18th and Barbara streets and then another after Siderio discarded a gun, according to prosecutors. The third and fatal shot happened from "less than 10 feet away" into Siderio's back while he was "face down on the ground," according to a lawsuit filed by Siderio's family against the city and Mendoza.

The Philadelphia Medical Examiner's Office ruled Siderio's death a homicide in 2022.

Former Philadelphia Police Commissioner Danielle Outlaw fired Mendoza after the shooting for violating the department's use of force directive.

In October 2022, Philadelphia District Attorney Larry Krasner said evidence showed that Mendoza knew that Siderio was unarmed when he fired the fatal shot into his back.

Earlier this year, Siderio's family sued Philadelphia and Mendoza seeking compensation for wrongful death. The lawsuit also claims systemic failures by the Philadelphia Police Department.

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