Chicago (CBS) — Community leaders came together Sunday to demand justice for Jemel Roberson.

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About a dozen people held a vigil at St. John Community Church in Robbins. They are demanding that police release the name of the officer who fatally shot the 26-year-old.

Roberson was working as a security guard at Manny’s Blue Room last week when a gunman entered.

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Witnesses said Roberson was trying to subdue the suspect when a Midlothian police officer shot and killed him.

The unidentified officer is on paid leave while Illinois State Police investigate.

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Roberson’s family and friends, along with community activists, will hold a protest in Midlothian Plaza starting at 11 a.m. Monday.