HOUSTON -

Montgomery County investigators still don't know why a The Woodlands man shot his wife and then turned the gun on himself.

It happened on Tuesday night at the couple's home in southern Montgomery County.

Sheriff's deputies said got the call from the couple's daughter, who was almost 200 miles away in Austin. She called and asked them to check on her parents.

Billy Terry, 60, killed himself and tried to kill his 59-year-old wife in what deputies are calling an attempted murder-suicide.

When deputies arrived around 8 p.m. Tuesday, they found the door locked, but were able to talk to Linda Sue Terry by phone.

She said she was too badly wounded to get to the front door, so the deputies kicked it open.

Linda Sue Terry was found on her bedroom floor. She had been shot at least seven times, officials said.

In another bedroom, Billy Terry was dead from a single, self inflicted wound to his chest, deputies said.

Detectives are still searching for a motive.

"Daughter said he had been out of work a couple of years and had some medical problems and he'd been a little distraught over that, but nothing that would lead her to believe anything like this would occur here," said Lt. Bill Bucks of the Montgomery County Sheriff's Office.

Sheriff's deputies said there had been no previous calls to the house any other sign of family problems. The sheriff's department and Texas Rangers are investigating.