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Six people are dead, including the suspected gunman, while another was left critically injured in what appears to be a massive shooting spree in Michigan.

State troopers said they were called to a home on LaChance Road in Missaukee County at around 11.40am on Friday about someone being shot.

When troopers then arrived at the scene, they found three people dead and another critically injured. That victim was then rushed to a local hospital.

Investigators later found another deceased person near a wooded area around Whitlock Lake and a fifth inside a separate home.

The shooting sparked a manhunt for the suspected gunman Chad Hickman, 39, who was considered armed and dangerous, before he, too, was found dead.

Police are now working to piece together exactly what happened.

'Not only is this difficult for our investigators and our troopers, but it's very hard for this community. You know, this type of loss is tragic,' Michigan State Police Public Information Officer Ashley Miller told Up North Live.

She then vowed that troopers are 'going to conduct a thorough investigation, and we want to make sure to keep our community members up to date on our current situation and what we're discovering throughout this process.'

Suspected gunman Chad Hickman, 39, was among those found dead in Michigan on Friday

Michigan State Police were seen investigating a massive shooting that left six people dead

Authorities said there is no threat to the larger public at this time

In the meantime, authorities said there is no treat to the public.

The Daily Mail has reached out to Michigan State Police for comment.

This is a breaking news story and will be updated.