Updated

Three people were shot to death and a fourth was seriously injured Wednesday at a condominium building in Louisville, Ky.

The fourth person was taken to University Hospital with what appeared to be life-threatening injuries after the shootings, reported shortly before 4:30 p.m. EDT Wednesday, police spokesman Dwight Mitchell said.

Asked if there was a suspect, Mitchell said officers believed everyone involved was accounted for but wouldn't say whether the shooter was among those shot.

"At this time, we believe we have everybody that's involved ...," Mitchell said. "We believe there's not anyone on the loose."

He said the shootings took place inside an apartment but declined to say whether there were other people inside at the time at the building on the outskirts of the Highlands neighborhood near the Watterson Expressway.

Mitchell also wouldn't indicate the ages of the victims and said the investigation was just beginning.

The condominium complex lies in a neighborhood filled with upper-middle-class homes with manicured lawns near private Bellarmine University.

Molly Hoekstra said she has lived in the condo complex for nearly two years but returned home Wednesday to find the building blocked off by police tape.

"Nothing like this has ever happened," she said. "It's always been really safe and neighborly. It's like the most quiet place there is."

Hoekstra, eventually allowed inside her condo, brought her cat, Sasha, out in a carrier and said she was spending the night with relatives. The shooting, she said, had left her unnerved.

"I don't think it will ever happen again," she said.