Mother, child dead in apparent murder-suicide at children's hospital

(CNN)—At midnight, staff at Cardon Children's Medical Center checked on 5-year-old Helious Griffith and his mother, who was staying with him at the hospital in Mesa, Arizona.

Helious and Tami Griffith appeared well.

But just two hours later, in the early hours of Saturday, during the next check, they were found dead, police said. ...