Two tourists from California were arrested in Rome on Saturday for allegedly carving their initials into the ancient Colosseum and taking a selfie, Italian media reported.

The women, ages 21 and 25, reportedly left their tour group and used a coin to engrave the letters J and N some 3-inches high into the walls of the ancient World Heritage site.

The two women have been charged with aggravated damage on a building of historical and artistic interest.

“We apologize for what we did,” the pair reportedly said. “We regret it, but we did not imagine it was something so serious.

“We’ll remember for a lifetime.”

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