Meanwhile, another alert from the school reports that law enforcement is "individually sweeping buildings on campus". "Secure yourself immediately" in light of reports of shots on-campus.
He faces several charges, including two counts of murder, four counts of attempted murder, four counts of assault with a deadly weapon with intent to kill, possession of a firearm on educational property, and discharging a firearm on educational property.
This isn't the first time this year shots have been fired at, or near, the campus.
She said she panicked: "We had no idea where he was.so we were just expecting them at any moment coming into the classroom".
University of North Carolina at Charlotte, also known as UNC Charlotte.
The lockdown was later lifted Wednesday morning nearly 12 hours after the shooting.
The campus police chief said Terrell had not appeared on their radar as a potential threat.
He didn't provide specifics other than to say he planned to review everything involved in the shooting and work on ways to prevent others from happening.
Congressman Richard Hudson, who represents NC's 8th District, released a statement about the shooting just before 7 p.m. As of Tuesday evening, that search continues.
NBC Charlotte was on the scene when Terrell was escorted to CMPD headquarters. "Examinations will be canceled through Sunday while we formulate a plan for the following week". Two of the four people who were injured are now in critical condition, according to police.
At the apartment complex where the suspect lived, residents watched as police entered a unit believed to be his and stayed for hours.
"I am disheartened that I have had to reach out to you regarding so many senseless acts of violence lately, and tonight's events are an unfortunate reminder that awful things can happen at any time and in any place", Guskiewicz said.