their causes and manners of death are pending .
mckinley said police hope the tragedy will serve as a reminder to people of the dangers of carbon monoxide .
 
mckinley said they do n't have reason to believe the incident was anything other than a tragic accident , but they are still investigating the deaths .
when first responders arrived , they found all three unresponsive in the closed garage .
metro police responded to the 9900 block of plaudit way on wednesday morning after a family member found the three in the family 's garage .
that way , as the pages that are referenced are changed or taken from the web , a link to the version that was live when the page was written will be preserved .
then the internet archive hopes that references to these archived pages will be put in place of a link that would be otherwise be broken , or a companion link to allow people to see what was originally intended by a page 's authors .
the girl was last said to be in critical condition .