GREENWICH, Conn. (AP) - A Portuguese man has pleaded guilty to the killing of his ex-girlfriend, whose body was found stuffed in a suitcase in Connecticut a year ago. Police in Greenwich, Connecticut, say Javier Da Silva Rojas pleaded guilty in federal court in White Plains, New York, to kidnapping resulting in death. Officials say he is expected to be sentenced on May 21 to at least 30 years in prison. The body of 24-year-old Valerie Reyes was found in a suitcase in Greenwich last year. A medical examiner said she died of homicidal asphyxia.