Updated

The family of an Oakland artist who was shot while working on an anti-violence mural has filed a claim against the U.S. Immigration and Customs Enforcement, saying the agency is partly responsible for the shooting because it was committed with an agent's stolen gun.

The San Francisco Chronicle reports (http://bit.ly/1Ujsbmr ) the family of Antonio Ramos announced the step toward a federal lawsuit Thursday. Ramos was shot and killed Sept. 29 with a weapon that was stolen Sept. 13 in San Francisco from a car being used by an ICE agent.

The Ramos's attorney says the agent failed to follow proper policies to stop the weapon from being stolen, such as keeping it in a bag or securing the weapon.

ICE officials didn't respond to a request for comment.

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Information from: San Francisco Chronicle, http://www.sfgate.com