Police have shot and killed a man they said had become violent at a south-east Queensland hospital.

Inspector Michael Trezise told reporters on Sunday the man was under police guard at Ipswich hospital on Saturday when he became violent towards the officers with him about 9pm. The 28-year-old was treated by medical staff but died.

“A female senior constable also received some facial injuries and she was treated at the hospital as well,” Trezise said. “She’s been released and she is at home, she is receiving some care from the police union.”

The man had been arrested on Friday and was taken immediately to the hospital.

Trezise would not confirm reports the man had feigned illness to get to the hospital and make an escape, but said that line of enquiry would form part of the investigation. He said there was no danger to members of the public.

Queensland police’s ethical standards command is investigating with the assistance of the crime and corruption commission.