The bodies of four children who disappeared this week in the Mexican state of Tabasco have now been discovered. The four children went missing when they were on their way to school on Tuesday. Police found the bodies yesterday at a ranch located two miles outside the town. Investigators say they believe the children had been suffocated, possibly from duct tape. The children were between seven and ten years old. It's not clear who's behind the killings, and police aren't sure about why the four kids were killed.