Police with dogs and armed with assault rifles swarmed nearby streets looking for a suspect early Wednesday afternoon and asked Wesleyan students to stay indoors. But after reassuring residents later in the afternoon that there was no threat to the public, police issued new warnings Wednesday night, telling residents and students to stay inside and be "extra vigilant."
They also released a surveillance photo taken inside the bookstore of a thin, bearded man they described as armed and dangerous.
Police Lt. Margaret Liseo said evidence uncovered at the scene "heightened our level of concern," but she wouldn't say what the evidence was.
"We just want to get the message out there to be extra vigilant," she said. "This individual is armed and dangerous, and we want to be sure public safety is our top priority."
The victim was identified as Johanna Justin-Jinish, of Timnath, Colo. She was working at the Red and Black Cafe inside Broad Street Books when the gunman shot her several times at point-blank range at around 1 p.m. She was pronounced dead at a hospital.
Justin-Jinish would have graduated next year from Wesleyan, a private liberal arts school in central Connecticut with about 3,000 undergraduate and graduate students.
Middletown police said they recovered a gun and the wig and know the identity of the suspect, reports CBS affiliate WFSB in Hartford.
Numerous newspaper and television reports said the suspect was an ex-boyfriend, but Liseo could not confirm the relationship.
"At this point, no," she said. "The better answer is, we don't know."
Police late Wednesday identified the suspect as 29-year-old Stephen Morgan. It's unclear where he lives.
A Wesleyan spokesman says he has no known connection to the university.
Police released a surveillance photo of a man they believe is Morgan.
As a precaution, university officials enacted the school's emergency plan after the shooting, and asked that all students and staff immediately get indoors. Police said they didn't believe the gunman remained on campus Wednesday evening and the university told students they could go about their regularly scheduled activities, WFSB reports.
With assistance from the superintendent of schools, police said, all Middletown public and private schools were locked down immediately after the shooting until the end of the school day as a precautionary measure. They said the students were released as usual at the end of the day.
Police said the Street Crimes Unit and a K-9 unit were called to the scene. They said a half-mile perimeter was set up around the area.
University officials offered counseling Wednesday night.
"This is a devastating loss for Johanna's family, friends, and for the entire Wesleyan Community," the university said in a statement. "Our hearts go out to all those who grieve for Johanna, and we hope all can find comfort in the support of friends, teachers and classmates."
Authorities said there were several witnesses to the shooting, and police found a wig used by the gunman and a weapon at the bookstore. Liseo said authorities haven't confirmed that it was the weapon used in the shooting.
The shooting and manhunt forced police to order hundreds of college students gathered nearby for Wesleyan's annual Spring Fling concerts to seek refuge. The concerts, held annually to allow students to blow off steam before spring semester finals, were canceled Wednesday.
Police officers were at the scene quickly because the station is less than two blocks away and officers were undergoing SWAT team training.
Outside the bookstore, several young women clustered outside the police line, crying. They said they were friends of the victim but would not talk to a reporter.
Other students called the shooting "tragic."
"We went from the height of our mood where everyone was really happy the semester was over to we don't even know what to think," said Darien Combs, a 20-year-old sophomore from Denver. "We're just processing."