The parents of two young boys who locked themselves in a car trunk and suffocated have been charged with involuntary manslaughter and child endangerment.

Carl Wright, 26, and Sherry Wright, 22, were charged Tuesday because of a lack of supervision when their children died Aug. 2, state Trooper Jeffrey Cermak said.After Wright went to work, sons Christopher, 5, and Drew, 2, took two puppies into the trunk and pulled the lid shut. Their bodies were found six hours later. They had been dead about an hour.