The NFL on Wednesday said it would investigate a report that at least one team at the scouting combine asked a draft prospect about his sexual orientation.

Three draft prospects have said they were asked a series of questions that touched on sexual orientation at the just-completed combine in Indianapolis.

Colorado tight end Nick Kasa was the first to make the claim, revealing the line of questioning in an interview with ESPN Radio Denver on Tuesday.

Michigan quarterback/receiver Denard Robinson, in an interview with the "The Dan Patrick Show" on Wednesday, and Michigan State running back Le'veon Bell, speaking with WDFN-Radio in Detroit on Thursday, also made similar claims.

"[Teams] ask you like, 'Do you have a girlfriend?' 'Are you married?' 'Do you like girls?' " Kasa said in his radio interview Tuesday. "Those kinds of things, and you know it was just kind of weird. But they would ask you with a straight face, and it's a pretty weird experience altogether."