>> reporter: shannon, the police department insists that holmes acted alone. joining us now for one of his first interviews sips the shootings, aurora police chief dan oats. jon scott from outside the theater. there was word overnight, some confusion overnight that there might be a second person involved, a second suspect. you can clear that up for us? >> sure. i would like to correct something. rather than insist he acted alone, we have no information that he acted with anyone else at this time. there was a report overnight about a person who was an acquaintance of mr. holmes. we have since contacted that person. we are trying to contact every person who was an acquaintance of mr. holmes to find out as much as we can. that's all that was. i think, based to what i know, i would describe their relationship as incons quential. but we did speak to that person last night, as part of a massive investigation. in the days and weeks ahead, we