LUCKNOW, Dec. 21 -- Police are struggling to trace the source of a bullet that struck a three-year-old girl while she was playing on the terrace of her home in Lucknow's Ghazipur area, an incident that surfaced on Friday and left the child battling for life.

The incident took place in Bastauli village on Thursday, when the child, identified as Lakshmi, 3, was playing under a tin shed on the rooftop with her two brothers. Family members said a loud sound was heard before she collapsed, bleeding from the head.

Her father, Ramesh, said the family initially believed she had suffered a serious fall during play. "We rushed her to a private hospital, where stitches were given. Later in the night, when her condition worsened, doctors at Ram Man...