COLUMBUS, Ohio (AP) – The state fire marshal’s office says fires killed 15 children in Ohio last year and have claimed 11 young lives in just the first two months of 2015.

Many factors affect those statistics, but the chief of the state Bureau of Fire Prevention notes that age and the season can be key elements.

Chief Frank Conway says some children may be too young to escape on their own or may instinctively look for their parents instead of crawling to safety. And he says in frigid weather, heat sources can be fire hazards if they’re not properly maintained.

Overall, Ohio has had 39 fire deaths this year. The most recent include a 10-year-old girl and 9-year-old boy whose Preble County home near West Alexandria was destroyed in a blaze early Saturday.

Malea and Malachi Bradburn were killed. A memorial was growing outside their burned out home Monday.

Grief counselors were on hand at Twin Valley Elementary to help staff and students cope with the loss of their school mates.