"The United Nations’ migration agency says it unknowingly co-operated with a notorious Libyan human trafficker in 2017, when he was invited by the Italian government to a meeting in Sicily at the height of the Mediterranean migrant crisis."
See: How a notorious Libyan trafficker was invited to an official Italian migrant meeting in Sicily (The Globe and Mail, link):
“The International Organization for Migration (IOM) on Monday said it regrets dealing with the Libyan criminal, Abd al-Rahman Milad, better known as Bija, but didn’t know at the time that he was serial abuser of migrants.”