A most-wanted American jihadi in Somalia says a known assassin from the militant group al-Shabab has shot him in the neck.

Omar Hammami posted on Twitter about what he labeled an assassination attempt late Thursday as he was sitting in a tea shop. He posted four pictures, one of which shows his face with blood on his neck and a blood-stained blue shirt.

On Friday Hammami tweeted that al-Shabab's leader was sending forces against him.

Hammami moved from Alabama to Somalia and joined al-Shabab in about 2006. He has since had a falling-out with the group and has previously publicized two al-Shabab death threats against him.

The U.S. named Hammami to its Most Wanted terrorist list in March.