A 65-year-old man died on Friday night after being stabbed by his 16-year-old grandson at their house near Alathur. The elderly man was trying to prevent the teen from attacking the latter’s 10-year-old sister. A 65-year-old man was killed after being stabbed by his 16-year-old grandson while attempting to prevent the teen from attacking his 10-year-old sister at their house near Alathur on Oct 19.