A security guard from Hampton Park suffered minor injuries after intervening in an assault at a business premises in South Melbourne this morning, 15 June.
The 52-year-old man had secured a man following an assault between a male customer and female employee at the York Street address, police say.
The security guard and the man were involved in a scuffle before St Kilda police arrived and arrested a 42-year-old Melbourne man just after 10.30am.
The Hampton Park man and a 57-year-old female from East Bentleigh both sustained minor injuries and were treated at the scene.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.