TRIPOLI, Feb. 21 (Xinhua) -- The International Organization for Migration on Monday condemned the killing of an illegal migrant and the injury of several others in the capital Tripoli by the Libyan security, who used excessive force against them.

"This is not the first time migrants are shot by Libyan state actors. Previous tragedies occurred at sea, at disembarkation points and detention centers. We call for an immediate investigation of the incident and greater oversight of the Stabilization Support Apparatus," the UN agency said in a statement.

As long as basic safety, protection and human rights are not provided in Libya, it cannot be considered a safe port of disembarkation, it said, adding that even illegal migrants who safely disembark in Libya are often subject to arbitrary arrest and detention.

Libya has been suffering insecurity and chaos since the fall of the late leader Muammar Gaddafi in 2011, making the North African country a preferred point of departure for illegal migrants who want to cross the Mediterranean Sea to European shores.