Now to a possible break in that Brooklyn bridge mystery. Two men coming forward claiming responsibility. Telling "The New York times" they swapped out the two American flags with these two bleached... See More
Now to a possible break in that Brooklyn bridge mystery. Two men coming forward claiming responsibility. Telling "The New York times" they swapped out the two American flags with these two bleached flags. ABC's linsey Davis has that story for us. Reporter: This morning, two artists are coming forward claiming responsibility for replacing the two American flags on top of the Brooklyn bridge with a pair of bleached out old glories last month saying they don't understand the backlash. They consider their swap a work of art. German artist mischa leinkauf and Mathias shared this with "The New York times" in an attempt to prove they pulled off the epic feat. It was quite clear they scoped this out and that they saw there were not security cameras and felt they were not being seen and I think they did it because they saw the bridge as a symbol for them of lots of different things including freedom and opportunity. Reporter: The NYPD is looking at the artists' video as part of its investigate telling ABC news they are "Aware of the public tapes made by the German artists and that the investigation is continuing." It's not the first time the fearless duo has gained media attention for testing the limits of safety all in the name of art. This video from euromax, a German broadcasting company highlights the two artists' escapades. It's not about making it look dangerous. It's about seeing and feeling what we expose ourselves to and there are no limbs for us. Reporter: They say they were very surprised by the strong reaction and that they always intended to come forward and return the flags and cooperate with authorities and they do want people to know they folded the flag in accordance with the U.S. Flag code for whatever that's worth. They were really surprised by the reaction. That's what they said. Not surprising. Linsey, thanks for bringing that to us.
This transcript has been automatically generated and may not be 100% accurate.