STERLING — A teenage couple accused of killing the boy's grandparents is due in court Wednesday to be advised of the charges against them.

Nineteen-year-old Brendan Lee Johnson and 18-year-old Cassandra Ann Reib could face charges of murder, forgery and robbery.

They were arrested Tuesday in connection with the deaths of Johnson's grandparents, Charles and Shirley Severance, both 70.

The body of Charles Severance was discovered in his home May 29. An autopsy showed no evidence of injury or trauma.

The remains of Shirley Severance were discovered near Sterling, with other remains found in Lorenzo, Nebraska.

Authorities have not speculated on a motive.