Police in Urbana say a University of Illinois student has been killed in her apartment a few blocks north of the campus.
Lt. Bryant Seraphin says officers were called shortly after 11 a.m. to the apartment complex.
The university police issued alerts to students and faculty, but the campus was not locked down.
Seraphin says the victim's roommate was in the apartment during the killing and had been bound.
He says she broke free and ran into the building's courtyard where she met officers.
He did not say how the woman was killed.
Authorities say they have arrested the victim's ex-boyfriend as a suspect.
Police say they used cellphone technology to locate him a few blocks north of the woman's apartment.