Benjamin Glenn Hoffmann visited Royal Darwin Hospital (RDH) four times on the morning before he allegedly killed four people, however, the doctor who treated him has told a court he had no concerns about Mr Hoffmann's mental health.
A Supreme Court jury was today shown CCTV footage from RDH's emergency department, which showed Mr Hoffmann visited the hospital about 1:00am on June 4, 2019, and left around 1:45am.
The vision shows Mr Hoffmann returning about 2:15am, leaving at 2:30am, attending for a third time around 2:45am and leaving the hospital around 2:50am.
Mr Hoffmann returned for a fourth and final time around 4:30am and was seen by emergency doctor Ross Dryden shortly before 5:00am, the first doctor to treat him all morning.
Dr Dryden told the jury Mr Hoffmann appeared "slightly agitated".
According to Dr Dryden's patient notes, Mr Hoffmann had normal vital signs, could maintain a conversation and the doctor had no concerns about the alleged murderer's mental health.
Dr Dryden told the jury there was no evidence Mr Hoffman had been poisoned nor required any further medical intervention.
Although Dr Dryden's June 4 notes said Mr Hoffmann had been "requesting an antidote" the doctor advised him to go home and come back if he continued to feel unwell.
Mr Hoffmann left the hospital without a mental health assessment.
Mr Hoffmann is accused of killing four men during an alleged shooting spree on the afternoon of June 4, 2019.
He has pleaded not guilty to all 14 charges against him.
Hoffmann 'very paranoid' during ED visit
Hayley Bunker, who has no specialist mental health training, told the jury she was working as a receptionist in the hospital's emergency department in the early hours of June 4, 2019.
Ms Bunker said she spoke to Mr Hoffmann for about five or 10 minutes during his first visit to the hospital, taking his personal details.
She described him as "very scattered" and "very paranoid" during their conversation.
"When I would ask him questions, he was speaking very quickly, he was saying strange things," Ms Bunker said. "He was very erratic."
Ms Bunker told the court that, at one stage, Mr Hoffmann tried to give her his phone and told her it was dead.
Hoffmann 'attempted to leave phone' at servo
Edith Reidy was working at the Puma service station in Coolalinga on the night of June 3, 2019.
The court was told Mr Hoffmann visited the service station three times that night.
CCTV shown to the jury shows Mr Hoffmann left his phone with Ms Reidy during his first visit, shortly before 6:00pm and the pair spoke briefly.
In Ms Reidy's police statement after the alleged shootings, she described Mr Hoffmann as "terrified" during this interaction and said the accused had told her that he was in trouble, and someone was after him.
Additional CCTV footage shows Ms Reidy talking to another customer soon afterward.
She tells the customer a man gave her his phone and warned "something's going to happen to me" and "something's going down", asking Ms Reidy to call the police if he did not return for it soon.
"He reckons someone's after him," Ms Reidy said in the June 3 tape.
The trial is expected to continue for another seven weeks.
