Goldberg says he has suspended DEA 's work in Bolivia . U.S. agency says it has n't been officially notified of any suspension . DEA removed Morales agents from coca-growing region this year . At least 30 people died in the violence , and Morales accused Washington of fomenting the unrest . Bolivia and U.S. have also been involved in ambassador squabble .
Goldberg says he has suspended DEA 's work in Bolivia . U.S. agency says it has n't been officially notified of any suspension . DEA removed Morales agents from coca-growing region this year . Bolivia and U.S. have also been involved in ambassador squabble .