FALL RIVER, Mass. — A shell casing found in a car rented by ex-New England Patriots player Aaron Hernandez and at the scene of a killing near his home were fired from the same weapon, a state police sergeant testified Wednesday.

Five shell casings were found near where Odin Lloyd was shot to death June 17, 2013, in an industrial park not far from the Hernandez home in North Attleborough. An employee of a rental car business has previously testified that she found one shell casing under the driver’s seat of Hernandez’s rented Nissan Altima, which he returned the day of the killing.

Police later found that shell casing in a trash bin at the business.

Sgt. Stephen Walsh testified Wednesday that his examination determined all six .45-caliber casings were fired by the same gun. He said they were consistent with having been fired from a Glock.

The murder weapon has never been found.

During cross-examination, the defense went after Walsh for not looking more thoroughly for ways to match the bullets, such as by contacting the manufacturer or by checking a national database for comparing bullets.