WASHINGTON (AP) — The man accused of killing federal intern Chandra Levy is expected to make his initial court appearance Thursday in a Washington, D.C., court.

Ingmar Guandique was charged Wednesday with first-degree murder. An arrest warrant last month accuses him of sexually assaulting and killing Levy on a trail in a Washington park in May 2001.

The 27-year-old illegal immigrant from El Salvador had been serving a 10-year sentence in California for a separate assault. Guandique arrived at the D.C. jail on Monday.

Levy had just completed an internship with the U.S. Bureau of Prisons when she disappeared after leaving her apartment in jogging clothes. The Modesto, Calif., native's remains were found a year later in a Washington park.