A brother-sister duo was today killed and 10 others, including six children, were injured in separate incidents of wall collapse in the district, police source said here.
 
Amit, 8 and his sister Bhawana, 16, were buried alive this afternoon when a wall of their mud house collapsed in Bejha village in Shahabad area, they said adding that four persons were injured in the incident.
 
In another incident six children were injured when wall of a house collapsed in Ramapur Rahulia village, police said.