GALLATIN, Tenn. (AP) -- A detective investigating the smothering deaths of newborn twins has testified that the mother told him the babies' father might not be her fiance.

Hendersonville Police Det. Steve Malach testified on Tuesday that DNA tests proved that assertion.

Twenty-five-year old Lindsey Lowe sobbed audibly as Malach described how Lowe had told him of the affair that occurred in December and January.

Lowe's attorney, John Pellegrin, said after the hearing that it was the first time she had heard the results of the paternity test.

Lowe is charged with two counts of first-degree murder. Malach testified that Lowe told him she covered the mouths of the infants after giving birth on Sept. 12 so that her parents would not hear their cries.

The case was sent to the grand jury.