A grand jury is preparing to meet to determine whether two former Virginia Tech students should be indicted in the killing of a 13-year-old girl.

A grand jury in Christiansburg is expected to hear evidence in the case against David Eisenhauer and Natalie Keepers on Tuesday.

Eisenhauer is charged with kidnapping and first-degree murder in the death of Nicole Lovell last January. Keepers is charged with being an accessory to kidnapping and murder and with helping hide the body.

Prosecutors haven't discussed a possible motive.

A friend of Eisenhauer told The Roanoke Times that Eisenhauer texted him about meeting a girl at a party and later learning she was underage. Bryce Dustin said Eisenhauer feared she would "expose" him and asked if Dustin knew where he could hide a body.