Islamist state media says Tunisian and American forces captured Ansar al Sharia . A Pentagon spokesman say Tunisia forces were not involved . But the United States denied any involvement in the reported arrest of Seifallah Ben Hussein Mokni , who is also known as Abu Iyadh and heads Ansar al Sharia in Tunisia . ` Abu Iyadh in Tunisia denies the Islamist group leader 's arrest .
Islamist state media says Tunisian and American forces captured Ansar al Sharia . A Pentagon spokesman say Tunisia forces were not involved . Abu Iyadh in Tunisia denies the Islamist group leader 's arrest .