Two men and a woman were shot and killed overnight in south Lansing, in what police believe was a murder-suicide.

Investigators believe 28-year-old Marcus Osby entered a duplex on Lansing's south side and shot and killed Latoy Tate, 28, and Xazier Dean, 25, before killing himself, said Lansing Chief Michael Yankowski.

Police said Osby is the father of two of Tate's children.

He characterized the shooting as a "domestic-related" incident but said it is "way too early in the investigation to get into the 'why.'"

An anonymous 911 call at 1:20 a.m. Friday requested a welfare check at the residence on the 2900 block of Truman Circle, he said.

Earlier: Overnight shooting that left 3 dead a murder-suicide

When officers arrived, evidence at the scene led them in into the home, Yankowski said, where they found Osby, Tate and Dean dead from apparent gunshot wounds.

Tate lived at the residence and had three children, who were not in the home during the shooting, he said.

Police were still on the scene late Friday morning and autopsies are expected within one or two days, Yankowski said.

The shooting occurred inside a duplex at the end of a cul de sac in a quiet residential neighborhood near Evergreen Cemetery and Carl G. Fenner Arboretum.

Dan Currie, who lives next door to the residence where the shooting occurred, said he was not aware of the incident until he went outside to go to work this morning.

"There's lots of families with kids around here, you just don't think this kind of thing would happen in your neck of the woods," Currie said.

The leafy neighborhood, dotted with tidy multi family homes, has never felt dangerous, said neighbor Claudia Tenny.

"It's very safe," she said. "There are kids out a lot in the summertime, a lot of young kids on bikes."

Anyone with information about the shooting is asked to call Det./Sgt. Todd Johnson at 517-483-6864 or anonymously to CRIME STOPPERS at 517-483-7867.