OAKLAND, Calif. (AP) — A 20-year-old man has been charged with killing a Northern California artist who was working on an anti-violence mural.

Authorities say Marquise R. Holloway of Oakland is scheduled to be arraigned Tuesday on a murder charge and multiple counts of robbery not related to the killing. He’s expected to be assigned a public defender at the hearing.

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He was arrested Friday and is being held without bail.

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Artist Antonio Ramos was fatally shot in an Oakland freeway underpass in September. Police say the 27-year-old from Emeryville was helping paint a mural when he was gunned down after an apparent argument.

Ramos was with a group of 10 artists working on six murals being produced by ArtEsteem, a group that seeks to stop violence by inspiring people with art and education.

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