A new report by state regulators says the killing of a worker at a North Carolina group home was over being forced to end a phone call with his mother.

A 16-year-old is accused of beating 54-year-old Ganiyu Ibrahim to death.

The North Carolina Department of Health and Human Services (NCDHHS) report revealed what happened before the killing on January 4 at the Miracle Houses group home in Charlotte.

The juvenile has been charged with murder and robbery with a dangerous weapon in connection with the case.

Officers responded to the home around 7:15 p.m. for an assault call, according to documents reviewed by Queen City News.

Officers found Ibrahim and a medic crew declared him dead at the scene.

NCDHHS says the incident started when the boy was told he could only have 10 minutes on the phone with his mom instead of 15 because phone hours were ending.

When Ibrahim told him to wrap up the call the teen cursed out the staff and left the home.

The 16-year-old returned a few minutes later and tried to call his mother again. He then allegedly punched Ibrahim in the face several times and continued to try to attack Ibrahim.

Ibrahim tried to go into an office but tripped. The teen then allegedly punched him and stomped on his head repeatedly.

When Ibrahim tried to call 911, the teen smashed his phone, continued to beat him, and dragged his body outside and down the stairs.

There was only one other worker in the home at the time and it was her first day and was fully trained.

She told police "He was in a rage. [Ibrahim] never even touched him."