New details about what happened inside Tomball hospital Saturday

TOMBALL, TX (KTRK) -- We're learning new information about a man who police say caused a standoff at a hospital in Tomball over the weekend.

George Pickering, 59, of Pinehurst, is charged with aggravated assault. According to court documents, he went to Tomball Regional Hospital Saturday night, where his son was in the intensive care unit.

When he was told his son had been placed on life support and would soon be taken off, investigators say Pickering pulled a gun from his waistband and pointed it at a nurse who was in the room with other family members.

The nurse said Pickering told her and other family members to leave the room. Pickering then reportedly said he was going to die with his son.

Tomball police sergeant Gary Hammond said that another of Pickering's sons wrestled the gun away.

According to Hammond, Pickering then said, "You don't think that's the only weapon I have."

However, he was not found to have any more weapons at the hospital, the sergeant said.

Pickering surrendered without incident about 11 p.m. after more than a dozen SWAT officers and the Harris County Sheriff's Department negotiating team reported to the hospital.

Pickering reportedly became ill during the standoff and received treatment overnight at Tomball Regional Hospital.

His bond has been set at $30,000.

Pickering was supposed to appear in court for the first time Monday, but he didn't because of a medical condition.

We don't know at this point what happened to Pickering's son or how he ended up on life-support.