Nebraska Corrections reports two staff members at the Reception and Treatment Center in Lincoln suffered serious injuries in two recent separate inmate assaults.
Investigators say last week an inmate was speaking to two staffers in a office area when the inmate closed the door and began punching one of them.
Initial examination at the hospital showed the employee was not seriously injured, but later on was diagnosed with a concussion.
Corrections says earlier this week, an inmate head-butted a staff member.
The employee was treated at a hospital for a fractured cheekbone.
An investigation has been launched in both cases, and findings will be provided to the Lancaster County Attorney for determination for possible charging decisions.
(Picture from Getty Images)