A group of men attacked a young woman and two of her relatives while they were jogging through Auckland's Mt Roskill War Memorial Park on Friday night.

The 23-year-old woman was assaulted by the males, suffering bruising and swelling to her left eye. She called police around 10pm.

Her 17-year-old male cousin was also attacked and sustained injuries to his head and a cut to his lower lip.

The woman's brother, who was also out running, was not reported to have suffered any injuries.

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Police enquiries to locate the offenders are ongoing.