It happened on Saturday night (30th June) at around 11pm outside Tesco Metro on the High Street.
A 40-year-old man sustained potentially life-threatening injuries as a result of the assault and was taken to the RD&E Hospital and later transferred to Derriford in Plymouth.
A 30-year-old man from Exeter has been arrested on suspicion of GBH and is currently in police custody.
Alison Hernandez secures third term as police and crime commissioner
She'll continue tackling major issues on her to-do list
How Exeter's traffic troubles influenced council vote
LTN campaigner ousts Labour candidate
Labour tightens grip on Plymouth City Council power
They've gained nine extra seats
Labour retains control of Exeter City Council
Despite losing a seat to the Greens and an independent
Colyford pushes for more action in ongoing spat with Colyton
East Devon District Council's been asked to intervene
Devon voters go to the polls
A third of Plymouth City Council seats are up for grabs
