An early-morning apartment fire sent three people to the hospital in Chicago's South Shore neighborhood Sunday, and one of them later died.

The fire broke out around 2:40 a.m. in the 1900 block of East 73rd Place, near Euclid Avenue.

The Fire Department called a still-and-box alarm and an EMS Plan 1 — automatically sending five ambulances.

Fire officials said two women were left in serious-to-critical condition and a man was in fair-to-serious condition after the fire. All were taken to the University of Chicago Medical Center with unspecified injuries.

One of the women, age 76, later died at the hospital, officials said.

Investigators Monday morning were still trying to determine the cause of the fire.