A 71-year-old man arrested on suspicion of fatally shooting two parishioners and injuring another at an Alabama church small-group meeting Thursday was subdued and held down by an attendee of that meeting, police said Friday.A 71-year-old man arrested on suspicion of fatally shooting two parishioners and injuring another at an Alabama church small-group meeting Thursday was subdued and held down by an attendee of that meeting, police said Friday.