Thomson ReutersFebruary 17, 2013 09:30
* Ansar al-Sharia man checkpoints, patrol hospital
* Witnesses saw members at U.S. attack - denies involvement
* Security situation complex on anniversary of uprising
By Hadeel Al Shalchi
BENGHAZI, Libya, Feb 17 (Reuters) - An Islamist militia linked to the attack on the U.S. consulate in Benghazi and kicked out of the city by locals is back openly manning checkpoints and building up support promising much-needed security.