SAN ANTONIO -

Sergeant Matthew Sheffel, a military veteran who served for 12 years, is now an inmate charged with aggravated assault with a deadly weapon.

Police said he grabbed his 7-year-old son and threw him against the wall. He then grabbed a knife and held it to the boy’s throat.

A woman who was in the home, but didn’t want to be identified, said the night the alleged attack happened, Sheffel was off his medications.

“He just wasn’t able to control himself anymore and I wasn’t able to talk him back,” said the woman.

A police report said Sheffel suffers from Post Traumatic Stress Disorder.

Family members said when he returned from his last 15 month tour in Iraq last year, he found out his marriage was over.

They said he was forced to care for his children and a set of 7-year-old quadruplets and a 10-year-old daughter.

What complicates Sheffel’s situation even more, he received a home from Operation Homefront last August. He could now lose the home since he remains in jail.

Aaron Taylor with Operation Homefront said, “we’ve put more than 100 military families in homes and they’re all, with the exception of Sgt. Sheffel, still in those homes.”

Sheffel remains at the Bexar County Jail.

As for his children, Child Protective Services has placed all 5 of them with their biological mother.

For a list of recent stories Mariza Mendoza has done, click here.