Mourners at a vigil on Wednesday
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Muslim Chapel Hill students 'had been threatened before'

The three Muslim students killed in Chapel Hill had been threatened before, a relative told the BBC's Rajini Vaidyanathan at a vigil for the victims.

An initial police investigation had suggested the motive for the attack was a dispute over parking, but relatives said it was a hate crime.

Many hundreds attended the vigil on the campus at the university of Chapel Hill, North Carolina, on Wednesday night.

Rajini Vaidyanathan sent this report from North Carolina.