A newborn baby girl was killed “after being thrown 40ft from a window by the child’s five-year-old sister”, according to reports.

 

The appalling tragedy came as the pair were left home alone by their mother while her husband was at work, say law enforcement. Passersby heard a girl screaming from a fourth-floor window, then saw the motionless baby on the ground.

 

Witnesses said their “knees went weak” at the horrific sight.

Paramedics confirmed the 21-day-old’s death at the scene after falling onto concrete from a residential building in Vasilyevo village, Russia.

“A criminal case has been opened over the death of the infant,” said the Russian Investigative Committee.

 

Source

I don't suppose the mother could have ever thought something so awful could happen. But a 5 year old and a baby should never have been left alone.