MOGADISHU, Somalia (AP) — Gunmen inside an airport in Somalia shot and killed two consultants working for the United Nations Office on Drugs and Crime, the U.N. mission in the country said Monday.

A U.N. official who spoke on condition of anonymity because the information hadn’t yet been made public said the two slain workers were working on a counter-piracy program and were looking at the financial flow of money related to Somalia’s pirate attacks.