Roberts then calmly got on the phone himself, giving the apartment's address and informing police that the "only" weapon -- a knife -- was outside with his ex-wife, Candice Roberts.

CNN: Ohio boy tells police father killed his mother on 911 call

But Oxfordshire discovered that 122 pupils from 98 families had left schools without informing anyone and without any known contact address.

BBC: Pupils 'missing' from school system