Police tape stretches across a road Reuters/David Gray

A Sydney police officer and security guard were shot at Western Sydney’s Nepean Hospital on Tuesday night by a 39-year-old man who allegedly threatened a doctor with a pair of scissors.

NSW police were called to the Penrith hospital’s emergency room just before 10.30pm, with the shooting reportedly happening at approximately 10.40pm.

“I heard a woman screaming quite hysterically, and I understand that there was a man holding scissors to her neck. Then following that there was some gunshots,” Jodie Bennett, 39, who was in the hospital with her son when the shooting occurred, told the ABC.

“What I saw was blood. Lots of blood on the floor.”

During a scuffle with the man, the police officer, who has been identified as Senior Constable Luke Warbuton from the NSW Police Dog Squad, lost control of his firearm and suffered a gunshot wound to the upper leg.

Senior Constable Warbuton is known as the man who helped bring Malcolm Naden down in 2012 with police dog Chuck. Naden was on the run for eight years for the murder of Kristy Scholes and Lateesha Nolan.

A security guard was also shot in the calf during the scuffle on Tuesday night. The Daily Telegraph reports that a police source confirmed both men were wounded by the same bullet.

Warbuton and the security guard were treated at Nepean Hospital and now in stable conditions.

Another security guard was hurt during the Nepean Hospital shooting, but his injuries and condition are unknown at this stage.

The 39-year-old man was arrested and currently assisting police with inquiries.