Hospital shooting in Pennsylvania at Mercy Fitzgerald Hospital tragically left one dead Thursday afternoon. Meanwhile, a psychiatrist who stopped the hospital shooting in Pennsylvania by pulling out his own gun to shoot his gunman patient is being hailed a hero.

According to the Associated Press, authorities are still trying to figure out why the patient fatally shot a caseworker at the hospital complex in a Philadelphia suburb in the first place. Authorities are still also finding a link between the psychiatrist who pulled out his own gun and the wounded the patient. The patient may have had concerns about the doctor and began the attack

The doctor is currently being hailed a hero after he had to shoot a patient who began the hospital shooting in Pennsylvania inside his office.

Delaware County District Attorney Jack Whelan identified the psychiatrist as Dr. Lee Silverman and the patient who began the hospital shooting in Pennsylvania as Richard Plotts. Whelan said the hero doctor had been grazed in the temple because of the gunfight in his office Thursday afternoon.

Whelan said, 'We do believe that there were some issues between the doctor and the patient, but whether or not he actually feared him is unclear.'

Silverman told police that Plotts was a patient and he began the hospital shooting in Pennsylvania after he fatally shot a caseworker. A prosecutor said Thursday night that Silverman was able to pull out his own gun and exchanged shells with Potts and wounded him.

The Daily Mail reports that Whelan has identified the killed caseworker in the hospital shooting in Pennsylvania as 53-year-old Theresa Hunt.

Hunt was from Philadelphia, according to reports. Authorities said she accompanied Plotts to the appointment with Silverman at a psychiatric crisis center which was adjacent to the hospital in Darby, just southwest of Philadelphia.

Whelan said of the hospital shooting in Pennsylvania, 'When the caseworker was shot, (Silverman) crouched down behind the desk to avoid him being shot. He was able to reach for his weapon, and realizing it was a life or death situation, was able to engage the defendant in the exchange of gunfire.'

He said there had been a struggle afterwards which spilled out into the hallway. Whelan added that after the hospital shooting in Pennsylvania was stopped by Silverman, another doctor and a caseworker jumped in to help him secure Plotts' weapon.

By late Thursday, the motive for the hospital shooting in Pennsylvania still remained unclear. However, Whelan supposed that Plotts, who was from Upper Darby, might have had issues with the doctor over his treatment plan. 

According to Whelan, staff members had initially heard loud arguing inside Silverman's office during the appointment with Plotts, before the hospital shooting in Pennsylvania. When they opened the door, they noticed that the patient already had a gun pointed at the doctor.  They quietly closed the door and dialed 911. A short time later, just before 2:30 p.m., gunshots were heard and that's when the struggle ensued.

After Plotts, severely wounded from several shots, came out from the office, another doctor and a caseworker helped wrestle him to the hallway floor and grabbed his weapon, said Whelan.

The hospital shooting in Pennsylvania reportedly occurred on the third floor of the Wellness Center of Mercy Fitzgerald. The facility is a 204-bed community teaching hospital, which authorities said had no surveillance cameras, including the doctor's office and the waiting area outside. According to authorities, there were also no metal detectors inside the center.

Even though Silverman was able to stop the hospital shooting in Pennsylvania, as of the current moment, it is still unclear why Silverman had a gun in his office, and authorities are looking into it which was apparently against hospital policy.

The prosecutor said of the hospital shooting in Pennsylvania, 'We do believe that there were some issues between the doctor and the patient, but whether or not he actually feared him is unclear. From all accounts, (he) would have acted in self-defense.'

A Mercy Health System spokeswoman said that the hospital has a policy barring anyone except on-duty law enforcement officers from carrying weapons on its campus, reports the AP.

According to the Daily Mail, there had been patients waiting in the first-floor lobby at the time of the hospital shooting in Pennsylvania. They reported of a tense scene as police arrived and ordered everyone out. Most of the patients waiting in the lobby were reportedly elderly.

A patient named Millicent Russell of Lansdowne was waiting for a 3 p.m. appointment at the time of the hospital shooting in Pennsylvania. He said, 'I dozed off, and I heard the cop shouting. Come on, come on, get out! There were people with walkers and canes and stuff. All these cops were outside running here and there with these guns.'

By Thursday evening, Whelan updated that 49-year-old Plotts was still in surgery at the Hospital of the University of Pennsylvania. Silverman for his part had already been treated and released after the hospital shooting in Pennsylvania.

The doctor cannot be reached for comments as telephone calls to his home went unanswered, said reports.

Plotts does not have a listed home phone number but according to Delaware County Court records, a man of the same name and age has a lengthy criminal record. However, Whelan was still unsure if the man with the court records and Plotts, who began the hospital shooting in Pennsylvania were the same person.

In lieu of the hospital shooting in Pennsylvania, a spokeswoman for the Mercy Health System said that the hospital has a policy barring anyone except on-duty law enforcement officers from carrying weapons on its campus.

Still, Yeadon Police Chief Donald Molineux insisted calling Silverman a hero who saved lives.

He said, 'Without a doubt, I believe the doctor saved lives. Without that firearm, this guy (the patient) could have went out in the hallway and just walked down the offices until he ran out of ammunition.'

He said of the other doctor and caseworker who helped put down the gunman of the hospital shooting in Pennsylvania, 'They acted vigilantly. They acted bravely.'

Hospital shooting in Pennsylvania scene, after having been investigated by authorities, had two guns recovered, said Whelan.