Updated

A nurse testified in an Oklahoma murder trial that a teenage girl hospitalized with severe wounds managed to identify two of her brothers as the attackers.

The Tulsa World reports the teenage sister was unable to talk because she had a ventilator tube down her throat so she wrote with pen and paper that her two brothers had hurt her. Her parents, two brothers and a sister were killed in the attack.

Prosecutors hoped to show Wednesday that 19-year-old Michael Bever was just as responsible for as his older brother in the 2015 slayings in the Tulsa suburb of Broken Arrow. He was 16 when authorities say he and Robert Bever carried out the killings.

Robert Bever pleaded guilty in 2016 and was sentenced to life in prison without parole.