Police investigate homicide of 6 people found dead at Milwaukee home

Six people were found dead at a home in Wisconsin's largest city in what police are investigating as a homicide.

Officers were conducting a welfare check at a residence in Milwaukee's Park West neighborhood on Sunday afternoon when they discovered the bodies of four men and one woman, according to the Milwaukee Police Department. The Milwaukee County Medical Examiner's Office announced early Monday that the body of a fifth man was also found at the location.

During a press conference Sunday night, Milwaukee Police Assistant Chief Paul Formolo said all of the deaths are being considered homicides, though he did not provide a cause of death. The Milwaukee County Medical Examiner's Office confirmed via Twitter overnight that the sixth body was also a homicide victim. Autopsies are expected to be conducted Monday, according to Formolo.

Investigators are still working to determine the identities of the deceased and for how long they were dead before officers arrived, Formolo said.

When asked whether a weapon was found in the home, Formolo told reporters that officers are actively searching the residence but did not give further information. He did not confirm if a suspect was among the deceased and could not comment on the relationships between the victims. However, he said there was no indication to suggest that the incident poses a threat to the community.

An investigation into the deaths is ongoing. A motive was unknown, according to Formolo.

Arnitta Holliman, director of the Milwaukee Office of Violence and Prevention, urged members of the community to contact the Milwaukee Police Department or Milwaukee Crime Stoppers if they think they have any relevant information.

"The community is tired, we are tired of seeing people's lives snuffed out too soon in preventable situations," Holliman told reporters. "Each and every one of us has to step up, speak up, stand up, do something."

"Milwaukee is great place and can continue to be one," she added, "but we cannot continue to see the kind of violence, level of violence, that we've been seeing."

Acting Milwaukee Mayor Cavalier Johnson released a statement on Sunday evening describing the deaths as "horrific."

"It is important not to feel numbed by the ongoing violence in our community," Johnson said. "A horrible crime has again occurred, and it is not a movie or a fictional account. These victims died in our city, in one of our neighborhoods."

ABC News' Jakeira Gilbert contributed to this report.