CHICAGO (AP) - Authorities in Chicago say three teens are charged with first-degree murder in the fatal beating of a 62-year-old man after they posted a video of the attack on Facebook.

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Police say Delfino Mora was attacked in an alley on the city's North Side early Tuesday. A passer-by found him hours later and he was taken to St. Francis Hospital in Evanston in critical condition. The Cook County medical examiner's office says he died Wednesday afternoon from blunt head trauma.

The teens were arrested over the weekend and are slated to appear in court Monday.

Mora's family says the father of 12 was disabled because of a workplace injury and was in the alley collecting aluminum cans to earn money for his family.

The Chicago Tribune identifies the suspects in the case as Malik Jones, 16, Nicholas Ayala, 17, and Anthony Malcolm, 18. Each has been charged with first-degree murder.

Police tell the Chicago Tribune that Ayala and Malcolm both used a cell phone to capture the beating on camera last Tuesday morning.