Imposter at the Vatican: Which one of these doesn't belong?

(CBS News) The Swiss guards "salute anyone with a dog collar on," CBS News' Allen Pizzey reported, so that may explain how an unidentified man slipped past the famous Swiss Guards in Vatican City as church officials met during this week's congregations ahead of the conclave to elect a new pope.

The man wrapped a purple scarf around his waist and wandered in, in an attempt to disguise himself as a bishop, Pizzey reported on "CTM."

"This is one of those nifty stories we like to get here," Pizzey said from Vatican City. "The Swiss Guards didn't notice him ... He managed to get up to where the cardinals were meeting and talked to a couple of people before they noticed that, 'Hey, this guy's not wearing the right hat and doesn't have the right clothes on.'"

The man even got the chance to talk with a few church officials and pose with one cardinal, Italian Cardinal Sergio Sebastiani, before he was hustled out, apparently with no harm done.

Pizzey added, "It lends lightness to an otherwise somber situation."

For Pizzey's full report, watch the video below.