Police were forced to wrestle ice addict into cage before he 'shot officer, security guard' in hospital

An army of officers was needed to wrestle an ice addict into a cage before he allegedly shot a policeman and a security guard in a Sydney hospital when he was left unattended in an 'acute care' bed, 7News can reveal.

When Michael de Guzman first arrived at Nepean Hospital just hours before he was to go berserk inside the emergency department and allegedly shoot a cop and security guard, he'd been arrested for breaking into Sherrie Taylor's house.

"He just barged himself in to my house and that's when I went come on come on get out of my house," Ms Taylor said.

He continued down Freeman Street, Colyton.

"Completely in another world, just out of his brain, walking down screaming out," witness Grahame Rowe said.

When police could finally get De Guzman into the police wagon, he did not go easily.

"Police had him tackled to the ground, there was six of them on him," George Panagopoulos

7News has confirmed the 39-year-old was high on ice. Despite that, he was given conditional bail and left alone at Nepean, before allegedly nearly killing Senior Constable Luke Warburton and security guard, Barry Jennings.

Hospital cameras did not record the actual shooting, but police have many witnesses.

Luke Warburton's family, friends and colleagues swarmed to the Intensive Care Unit to offer their support to the police dog handler.

The acting police commissioner was one of them - she is relieved he's doing well.

"He has commented that he's missing both his dogs, he'd like to see them, I don't think they're going to let them in to see him in intensive care," NSW Police Acting Commissioner Catherine Burn said.

The offender is expected to return to court in March.