TISDALE, Sask. -- RCMP say a woman and three children have been killed in a small community in northeastern Saskatchewan.

Police say they received a call about supper-time Tuesday that a family from Tisdale hadn't been heard from all day and couldn't be reached.

About six hours later, after officers obtained a search warrant, they found a woman and children dead in a home in the town. The children were all under the age of nine.

Police have not said how they died, but believe they were killed before the call was made to the RCMP detachment.

An investigation quickly led to a suspect in another house about 130 kilometres away in Prince Albert.

A six-month-old baby was found with the dead man, but the infant was not injured and is now in the care of social workers.

Police say the man was known to the victims and his death is not considered a homicide.

"There is no risk to public safety and investigators do not anticipate laying any criminal charges relating to these four deaths," said an RCMP release.

No names have been released.

"It's a shocker," said the manager of the Wicks' Mobile Home Park and Gas Bar on the edge of the town. Looking out his window, he said he could see several RCMP cruisers parked near one of his trailers surrounded with yellow tape.

He wouldn't give his name, but said the dead woman and children had lived in one of his rental trailers for the past eight months, along with her husband and a young baby. He described them as a quiet and friendly family.

RCMP phoned him late Tuesday.

"I was called to come down at midnight and asked if I had a spare key for the place."

He said the husband of the dead woman was also there and appeared very distraught.

"About all we can say is yes, we are in shock, and very saddened by this event," said Al Jellicoe said, mayor of the town of 3,200.

Premier Brad Wall also sent condolences out on Twitter soon after news spread of the killings.

"Our thoughts and prayers to the family, friends and community dealing with the indescribable tragedy in Tisdale," he said.

Tisdale, a town of about 3,200 people, is located 210 kilometres northeast of Saskatoon.

It may be best known as the hometown of comedian Brent Butt, who modeled his popular "Corner Gas" TV show after his experiences working in a gas station in the community.