A police officer at the scene said a man had been attacked by someone with a machete in an apparent road rage incident.
“Police are following lines of inquiry,” he said.
The victim had a bandage and blood visible on his right hand as he spoke to police.
A police spokeswoman said it was reported that one person assaulted another on Thames St around 8.20am.
A Hato Hone St John spokesman said one person was assessed at the scene and transported to Hawke’s Bay Hospital in a moderate condition.
A Te Whatu Ora – Health New Zealand, Hawke’s Bay spokeswoman said a man in his 30s was being assessed in Hawke’s Bay Hospital’s Emergency Department on Tuesday morning.