Libya said Saturday it will seek extradition of its former spy chief who was arrested in Mauritania and is wanted for war crimes by the International Criminal Court . NEW : U.S. Rep. Nancy Pelosi is in Libya to lead a congressional investigation . Al - Hassan was arrested at an airport in Tripoli on Friday , Libyan authorities said . He was the security chief for Libya 's President Gadhafi . He is wanted by the International Criminal Court .
NEW : U.S. Rep. Nancy Pelosi is in Libya to lead a congressional investigation . Al - Hassan was arrested at an airport in Tripoli on Friday , Libyan authorities said . He was the security chief for Libya 's President Gadhafi . He is wanted by the International Criminal Court .