Four persons, including three children, were today killed and eight injured when the van in which they were travelling collided with a speeding tempo here, police said.
    
The incident occurred in Refinery area of Mathura, about 300km from here, they said, adding the deceased were identified as Jassi (18), Pankaj (12), Priyanshu (7) and Happy (8).
    
The injured were rushed to a hospital, where their condition was stated to be stable.