As Raju 14 and his sister Ishrat 12 were on way to their school around 7 a.m the dumper driver lost control over his vehicle after colliding with a bus while overtaking in Sarita Vihar near Shaheen Bagh and mowed down the girl and injured her brother.
"Accused Puspender was caught by passerbys and handed over to police " Deputy Commissioner of Police Chinmoy Biswal said.
Both children were rushed to hospital where Ishrat was pronounced dead while Raju is undergoing treatment.
The two lived in a slum and studied in a government school in Noor Nagar.
--IANS sp/tsb/vm