PHOENIX (AP) - A possible plea deal in the deadly Tucson shootings that wounded then-U.S. Rep. Gabrielle Giffords would send Jared Lee Loughner to prison for the rest of his life, according to a person familiar with the case.

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A court-appointed psychiatrist will testify Tuesday that Loughner is competent to enter a plea in the shooting rampage that killed six people and injured 13, including Giffords, said the person, who was not authorized to discuss the case publicly and spoke on condition of anonymity.

A status conference in the federal case had already been scheduled for Tuesday in Tucson.

The person, speaking Saturday about upcoming events in the case, said the plan is for Loughner to enter a guilty plea in the murders and attempted murders. The plan is contingent on the judge in the case allowing Loughner to enter the plea.

The Los Angeles Times reported earlier Saturday that Loughner was set to change his plea.