Anderson Cooper Hetherington Was My Friend

4/20/2011 5:41 PM PDT
Anderson Cooper has tweeted about the death of his friend -- Oscar nominated director Tim Hetherington -- saying, "The news is gutting."

Cooper called Hetherington a "friend and great photographer" ... adding, "He was such a wonderful guy."

As we previously reported, Hetherington -- who co-directed "Restrepo" -- was killed today in Libya when his camp was hit by a rocket-propelled grenade.