The husband of an Alabama woman charged in her granddaughter's running death could be a witness in her upcoming capital murder trial.

Court documents show prosecutors have subpoenaed Johnny Garrard in the trial of his wife, 59-year-old Joyce Hardin Garrard of Boaz.

The woman is accused of making granddaughter Savannah Hardin run until she collapsed and died in 2012. Initial jury qualification is done, and final selection begins next week.

Documents filed Friday don't indicate why prosecutors might seek testimony from Garrard's husband.

But arguments at a past hearing suggested he was at the scene at least briefly on the day authorities say Savannah collapsed after running around the yard for hours.

The defense says Garrard is innocent. It blames the child's death on other medical problems and treatment decisions.