TIFFIN, Ohio — A fast-moving fire claimed the lives of a man and five children under the age of 7 on Sunday morning when it swept through a mobile home in northwest Ohio.

The fire was reported shortly before 8 a.m. Sunday in a mobile home park in Tiffin, about 50 miles southeast of Toledo. Firefighters got all six people out in about 12 minutes, but all were pronounced dead at a hospital, Tiffin Fire Chief William Ennis said.

Owanna Ortiz said her first cousin, Anna Angel, was the children’s mother and lived in the home with them and the man who died. Ortiz said the family didn’t have a car and had to get around on bicycles.

“If she had to get somewhere, they had two strollers they had to take, but they made it work,” Ortiz said.

A stroller, a little pink bicycle and an adult bicycle with a bike trailer attached to the back could be seen outside the home with its charred and broken windows.

“She had a whole family, and now she has nothing,” Ortiz said of her cousin.

Her cousin was working at a fast-food restaurant at the time of the fire, Ortiz said.

Authorities would not confirm the identities or relationships of those killed or comment on a possible cause. A state fire marshal’s investigator said there were no indications of anything suspicious and said it could take up to two days before authorities know how the six died.

“We won’t release any more information until we know the cause of death,” state investigator Tim Spradlin said.

Nancy Williams, who manages the Highland Park Estates mobile home park and lives there, said she yelled to her son to call 911 and ran to the home when a neighbor alerted her to the blaze.

“I knew there were babies in there,” she said. “But once we got there, there was nothing we could do. It was fully engulfed in flames and we couldn’t get in.”

Ennis said there was heavy fire in the center of the mobile home and heavy smoke throughout the structure when firefighters arrived. Witnesses said the fire burned quickly, breaking out windows and peeling some of the trailer’s aluminum siding.

Another neighbor, Rick Hummell, 49, said he also went to the home to see if he could help when he saw the fire.

“I watched the babies get dragged out,” Hummell said. “It just made me sick.”

Harry Miller, chief of the Bascom Joint Fire District outside Tiffin, said about 30 members of his volunteer department assisted Tiffin firefighters.

Miller noted that fires involving children are among the most difficult for firefighters to handle, especially for those new to the job.

“We had some new EMTs on the scene as well, and it’s very tough on everyone when it involves kids,” Miller said. “It hits home because we all have kids.”