JAKARTA, Indonesia, Sep 20, 2002 (AP WorldStream via COMTEX) -- The United States has warned Americans traveling to a popular tourist area in Indonesia to be vigilant, saying it has received credible information that Westerners may be the target of violence. The notice was issued Thursday night to American citizens living in Indonesia and follows the closure last week of the U.S. Embassy in Jakarta for four days. The closure of U.S. Embassies in Indonesia, Malaysia, Cambodia and Vietnam was prompted by what officials described as security threats that preceded the anniversary of the Sept. 11 terrorist attacks. The...