Serrano, a native of Argentina who was not licensed to practice here, was detained by Immigration and Customs Enforcement agents for possible "removal" from the U.S., according to TMZ.
On Tuesday, Presley's rep admitted the 62-year-old star was treated by Serrano.
"Priscilla Presley was one of many documented victims of [Dr. Daniel Serrano]," her rep said in a statement to Usmagazine.com.
"An investigation which uncovered his misconduct ultimately lead to his imprisonment. Ms. Presley dealt with this matter years ago and everything is well."
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