CHEYENNE, Wyo. (AP) — A 25-year-old Wyoming woman charged in the death of her 16-month-old son has waived her preliminary hearing.

Sabrina Sawicki, of Cheyenne, is charged with first-degree murder and aggravated child abuse.

Her case now moves to Laramie County District Court, where Sawicki will next appear for an arraignment. The next court date has not been set.

But her attorney, Cassie Craven, says Sawicki will plead not guilty. Craven says Sawicki was released on a $50,000 surety bond.

Court documents say that the child died April 27 and that a preliminary autopsy report indicated the child died from head trauma consistent with "shaken baby syndrome."