A letter from the emir of Ansar al Sharia Tunisia, Seifallah Hassine a.k.a. Abou Iyadh, was published on its website yesterday, urging young members to be steadfast despite efforts by security forces against the group. The retrial of 20 persons suspected in the attack on the US Embassy in Tunis on September 2012 is likely to be delayed. Four suspected terrorists stole four solar collectors from a solar energy research facility in north Jendouba on March 21.