Tension is brewing at some bars due to Covid restrictions.
An argument over face masks turned violent at Christchurch's Kaiser Brew Gardens on Saturday night - ending in a split lip and a bloody nose.
Owner Campbell Parker says a man became verbally aggressive towards a group of patrons - holding but not wearing their masks - as they waited to pay.
It escalated with a man punching an off-duty staff member in the face. A second man was also hit.
AdvertisementAdvertise with NZME.
Parker says this is the extra strain hospitality businesses have to deal with.
A police complaint has been made.