Lincoln University's campus was locked down for about 30 minutes Monday afternoon.
The University Relations office posted on Facebook that the lockdown was "due to the investigation into the subject who flashed a handgun in front of Dawson Hall earlier today."
When the lockdown was ended and the class schedule was resumed "as normal," the Facebook page named two subjects considered to be "persons of interest."
Jarell Craig and Marquel Lewis remained at large Monday afternoon, the school said without providing other details of the gun flashing incident that prompted the lockdown.
Students and others were cautioned "not try to apprehend these individuals on your own," but to contact Lincoln's police department if they had "information on their whereabouts."
When the News Tribune called to ask about the lockdown, LU police had reported there wasn't one.
The lockdown occurred a little more than an hour before a planned 3 p.m. "Walk For Peace" that was organized as a "call for peace and safety, particularly in the area surrounding the campus," according to a news release LU officials had sent to the media Monday morning.
That walk was organized "in response to recent crime in the area, including one in which a student was robbed while walking from a nearby gas station" last Thursday, the LU release said.
LU President Kevin Rome said the campus district - including the streets in close proximity to university property - should be a safe zone for students.
"Whether a student lives on campus or commutes, this area is their home," Rome said. "Walking to a convenience store just a few blocks away should not be a scary situation for anyone.
"I am calling on our student body, faculty, staff and neighbors to take ownership of and protect this area.
"We must all send a message to the criminals that we are watching and we will report to, and cooperate with, the proper authorities to ensure those who mean us harm are prosecuted."