A woman in a car was reportedly intimidated by a group of about 10 motorcyclists, some believed to be patched gang members, on Saturday afternoon in Nelson.
Police are looking for witnesses of the incident to come forward.
Police said the woman was driving south on Whakatu Drive about 2.15pm on Saturday. She was near the Saxton Rd off-ramp when the incident occurred.
Anyone who witnessed anything involving a group of motorcyclists around the time is asked to contact police on 03 546 3840. Information can also be given anonymously by calling Crimestoppers on 0800 555 111.
