A death row inmate has asked a federal appeals court to halt his execution and has refused to choose a method of lethal injection.

Lawyers for Albert Greenwood Brown filed court papers Sunday saying he is appealing a federal court judge's refusal to block his execution, which is scheduled for Wednesday. Brown also declined to choose between a one-drug lethal injection or execution by a three-drug cocktail.

Brown's refusal to choose means a three-drug cocktail will be used if the appeals court doesn't block California's first execution in nearly five years.

Brown also plans Monday to ask a Marin County Superior Court judge to block his execution while a recently filed lawsuit challenging the state's lethal injection regulations is pending.