HONOLULU -- A federal judge on Wednesday ordered a woman accused of threatening first lady Michelle Obama to have a mental evaluation on the mainland.

Kristy Lee Roshia, 35, threatened Mrs. Obama in a phone call to the Boston Secret Service office, according to federal documents. Listing a Hamakua Drive address, she also sent a letter from Hawaii threatening to kill Michelle Obama, the documents said.

Roshia is also accused of assaulting the Secret Service agent who questioned her.

A judge on Wednesday agreed that Roshia should be evaluated both for her mental fitness to stand trial and her sanity at the time of the threat.