A project featuring the 34,361 names of refugees who have died trying to cross the Mediterranean since 1993 has gone missing.

Running along the hoardings of a new development in Liverpool’s Chinatown, The List by Turkish artist Banu Cennetoğlu has not been seen since last Saturday. The news came to light after the Liverpool Biennial tweeted, “We were dismayed to see it had been removed on Saturday night and would like to know why.” The city’s council have also confirmed with Guardian that they didn’t order its removal.

With little information to go on, as of 1pm UK time on Friday, the Biennale was still clueless as to The List’s whereabouts. “It is timely and important to make The List public during a global refugee crisis,” the Liverpool Biennial said in a statement. “We were dismayed to see it had been removed on Saturday night and would like to know why. The List has been met with critical acclaim and we are doing everything we can to reinstate it.”

The List was published by both the Guardian and Italy’s  Il Manifesto newspaper for World Refugee Day, and has been shown internationally. The names are compiled and updated by United for Intercultural Action, the pan European arts organization known for their support of refugees seeking solace in Europe. A French court recently found the group’s founder, Cedric Herrou, not guilt for smuggling migrants into the country. Acquitted under the principle of fraternity, Herrou — an olive farmer and activist — has helped around 200 migrants pass from Italy to France

The List isn’t the only political project this year’s art festival. Under the theme Beautiful world, where are you? Taiwanese artist Chou Yu-cheng is reshowing a gold-plated stainless steel wall emblazoned with dents from when participants were encouraged to “interrogate the act of protest” by hurling rocks at it in 2015.