Here’s an update to a story the No Coast Network has been following.  A man from rural Sigourney has now been charged with murder…accused of killing his girlfriend’s four-month-old son.  A criminal complaint says 21-year-old Johnny Dale Jr. was watching Kane Bruns when his girlfriend went to work on June 15. She told an investigator the boy had a bruise on his forehead and wouldn’t wake up when she got home. Doctors later told investigators Kane had suffered brain and spinal cord injuries consistent with child abuse.  The complaint also says Dale said he’d grown frustrated with the baby and said he bounced him on an air mattress in an attempt to get him to sleep. Dale acknowledged that his actions likely injured the boy.  The complaint says the boy had been taken to a Des Moines Hospital, but died Friday morning (6/21).  Dale is being held in the Mahaska County Jail on a million dollars bond for first degree murder.  Mahaska County Attorney Andrew Ritland tells the No Coast Network Dale’s original charge of child endangerment is now pending, since the child has died.