Story highlights Marco Rubio campaigned in Myrtle Beach, South Carolina, on Tuesday

A man interrupted the Florida senator to call for former secretary of state Hillary Clinton to be waterboarded

(CNN) An audience member interrupted Marco Rubio at a rally Tuesday, shouting "Let's waterboard Hillary."

The Florida senator was discussing his plans to keep the U.S. military detention facility at Guantanamo Bay open when the attendee made his outburst about Democratic presidential front-runner Hillary Clinton, and Rubio said he didn't want to know what the man said, laughing and citing the press in the room.

"I didn't -- I don't want to know what he said. Please, because then -- the press is here, I didn't even hear what they said," Rubio joked, drawing laughs from the crowed.