Three people were killed in a crash early Friday when their car was engulfed in flames on the Far South Side.

Anthony Guajardo, 30, was in a speeding vehicle with two other males about 1:10 a.m.when it hit a light pole in the 3300 block of East 100th Street, flipped onto its roof and caught fire, according to Chicago Police and the Cook County Medical Examiner’s Office.

All three people inside the car were dead at the scene, authorities said.

An autopsy Saturday found that Guajardo, who lived in the same neighborhood, died of carbon monoxide toxicity and the inhalation of products of combustion in a vehicular fire, according to the medical examiner’s office. Thermal burns were listed as a secondary cause.

Authorities have not released the identities of the other two people in the car. Autopsies Saturday found that one of them died of carbon monoxide toxicity and inhalation of products of combustion with thermal injuries listed as a secondary cause, while the other died of injuries suffered in the crash as well as carbon monoxide toxicity, the medical examiner’s office said.

All three deaths have been ruled accidents.

The CPD Major Accidents Investigation Unit was investigating the crash.