Some family members of victims and survivors of the San Bernardino attack will file court papers in support of a judge's order that Apple Inc. help the FBI hack into a locked iPhone as part of its investigation, a lawyer and others say.

A Los Angeles attorney, Stephen Larson, said Monday he represents at least several families of victims and other employees affected by the attack. He said the U.S. Attorney in the case, Eileen Decker, sought his help.

Larson said he will file a brief supporting the Justice Department before March 3.