She was killed with a gun her husband was not supposed to have

A man killed his wife, then himself, near Prosser with a pistol that he had illegally.

Teresa Meraz-Cisneros, 39, was shot several times Thursday in a vineyard north of town by her estranged husband, said Benton County Sheriff Jerry Hatcher.

Heriberto Martinez-Sanchez, 46, of Mabton, then turned the gun on himself, according to the investigation.

The Sunnyside mother of six had a protection order against him.

The couple’s 21-year-old son found them about 100 yards into the vineyard on the 28000 block of North Hinzerling Road at 6:44 p.m.

Meraz-Cisneros was already dead.

Medics took Martinez-Sanchez to Kadlec Regional Medical Center in Richland. He was unresponsive and in critical condition at the time, said officials.

Hatcher said Martinez-Sanchez died from his wounds early Friday.

Investigators say a Yakima County protection order was served against Martinez-Sanchez in July. The order prevented him from contacting his wife.

It also prevented him from possessing or buying a gun. The order was to last 50 years.

Hatcher said the couple had six children between the ages of 6 and 23.

Cameron Probert: 509-582-1402, @cameroncprobert