interviewed four times by mueller's grand jury. those sources say nader set up the seychelles meeting between prince and the russian banker specifically to launch conversations between the trump transition and russian government officials. >> people talk about there was a back channel or all of that? you're saying no, off the table? >> complete hogwash. >> reporter: prince was familiar with the investigation tell abc news his team has obtained evidence from nader that suggests he met with prince at the pierre hotel in new york city a week before that seychelles meeting. sources say that evidence documents that reveal within hours of the new york city meeting, nader started sending messages to prince with the bio of the russian banker, showing he was a powerful putin ally. just a week later, prince was in the seychelles having a beer with that russian banker. a meeting he said was unplanned. prince has said he was not representing the trump transition and he has spokesman told us he stands by his testimony before congress. tom?