By Sean Devlin For Dailymail.com
Published: 04:19 GMT, 15 February 2018 | Updated: 04:19 GMT, 15 February 2018
A partygoer stole the thumb from one of the famed Terracotta Warriors at Philadelphia Museum during a holiday party after snapping selfies with the statues.
Federal authorities said that 24-year-old Michael Rohana of Delaware pocketed the artifact during Franklin Institute's Ugly Sweater Holiday Party after sneaking into the closed exhibit and stealing the thumb.
The statues which were built to protect emperor Qin Shihuangdi in the afterlife, and date back to 200 B.C are on loan from China.
Michael Rohana, 21, stole the thumb from the warrior during a party at the Philadelphia museum
In an affidavit from the FBI, a young man in a long-sleeved green sweater and a Phillies cap entered the exhibit during one of the museum's signature Science After Hours parties on December 21, according to USA Today.
FBI Special Agent Jacob Archer said that the suspect was caught on film snapping selfies with 'a priceless part of China's cultural heritage'.
In a statement Wednesday night, The Franklin Institute said 'standard closing procedures were not followed' by a security contractor.
When confronted about the thumb, Rohana produced it and returned it to the FBI, which gave it back to the Franklin Institute
Rohana sneaked into the closed off Terracotta Warrior exhibit at the Franklin Institute (pictured above), took selfies with the statute, and snapped off its thumb
'As a result of this incident, we have thoroughly reviewed our security protocol and procedures and have taken appropriate action where needed,' the Franklin Institute said.
The affidavit says that Rohana originally entered the closed exhibit alone, then brought two friends in to show them around.
Rohana took a selfie with one of the sculptures before leaving, and according to the