Two boys ages six and seven discovered a dead baby buried in the sands of a Sydney beach Sunday morning. The search is on to find the parents of the baby. Police could not determine the age or sex of the infant because of the advanced state of decomposition. "Police are concerned about the welfare of the mother involved and hope she sought medical assistance,” said New South Wales state police Inspector Andrew Holland. The tragic discovery comes a week after a Sydney cyclists heard the cries of an infant who had been left in a roadside drain for days.