On the night Ben died, his mum said she spoke to him for the last time at 20:25 GMT and knew something was not right.
“He was just slurring. I’ve never heard him speak like that,” she told the inquiry.
Referring to Morris’s written evidence, Troup said: “What you did make out was he was agitated, desperate to get out of the Linden Centre and expressing to you he was going to kill himself or someone else.”
Morris confirmed that was the case.
She added that she immediately called the ward that night and was told by staff they heard what he said he was going to do.
The hearing was told the two staff members working with Ben left work at about 20:30 – half an hour before their shift was due to end.
Ben was discovered at 21:00. Attempts were made to resuscitate him, but he was declared dead at 21:43.
He left behind a partner and a daughter, who was two and a half years old when he died.