DAYTONA BEACH, Fla. (WFLA) — Daytona Beach police said Saturday morning’s shooting at AdventHealth was a thwarted murder-suicide.

According to the police department, a 76-year-old woman shot her terminally ill, 77-year-old husband in the head before locking herself in his room.

In a news conference Saturday, Daytona Beach Police Chief Jakari Young said the woman told them the shooting was planned weeks in advance.

“Apparently because he was terminally ill, they had a conversation about it and they actually planned this approximately three weeks ago – that if he continued to take a turn for the worst, he wanted her to end this,” Young told reporters. “Apparently the goal was for him to do it, but he didn’t have the strength, so she had to carry it out for him.”

When it came time to turn the gun on herself, Young said the woman decided she couldn’t go through with it. He said officers deployed a flash-bang device as a distraction in order for them to use “less-lethal” measures to subdue her.

“She could be facing a first-degree murder charge,” Young said. “They’re working on the paperwork, but she will be charged.”

“This is obviously a tough situation,” Young said. Her husband was terminally ill, so she was already in a depressed state just based on her husband being terminally ill and knowing the end was near.”

The victim was identified as Jerry Gilland and the shooter was identified as his wife, Ellen Gilland. The couple lived in New Smyrna Beach.

As the incident unfolded, Dr. Joshua Horenstein, who is listed as a cardiologist for AdventHealth, responded to a police department tweet, saying he was locked in a closet during the incident. Police later said the staff and patients were removed from the area, but their efforts were complicated by the fact that most patients on the floor were on ventilators.

No staff or patients were threatened during the incident. The Daytona Beach Police Department is investigating how the woman was able to bring the gun into the hospital.