Tourist Who Defaced Colosseum , Claims He Didn’t Know It Was Ancient.<br />Last month, 27-year-old Ivan Danailov Dimitrov was caught on video carving "Ivan+Hayley" into the wall of the Colosseum, NBC News reports.<br />His actions drew outrage from Italian officials and others on social media.<br />In a recent letter shared by his attorney, Dimitrov claims he didn't know that the Colosseum was nearly 2,000 years old.<br />The letter was reportedly <br />addressed to Mayor Roberto Gualtieri, <br />the City Council and magistrates.<br />I admit with deepest embarrassment <br />that it was only after what regrettably happened that I learned of the <br />antiquity of the monument, Ivan Danailov Dimitrov, via apology letter.<br />He then extended his "heartfelt apologies <br />to the Italians and to the whole world for the damage done to an asset that is, in fact, <br />the heritage of all humanity.".<br />Dimitrov and his partner <br />reportedly live in England. .<br />I am also aware that similar conduct in my country would have resulted in much more serious consequences, Ivan Danailov Dimitrov, via apology letter.<br />For this reason I accept all responsibility and will make sincere and concrete efforts to redeem myself and make up for the mistake I have made, Ivan Danailov Dimitrov, via apology letter.<br />Those convicted of vandalizing the <br />Colosseum face up to five years in prison <br />and a $15,000 fine, AP reports.<br />NBC News reports that Rome's mayor says he has not yet received any letter from Dimitrov