A man who reportedly hit another man in head with a hammer on Thursday has been charged over the serious assault.
The alleged assault, which left the victim fighting for his life in hospital, happened at an industrial estate on Macquarie Place in Boronia, about 11.30am.
![Police tape at the scene of the incident.](/web/20170217022645im_/http://www.theage.com.au/content/dam/images/g/u/f/6/f/e/image.related.articleLeadwide.620x349.guf6hm.png/1487296371283.jpg)
"The male victim has attended here of his own volition, and the dispute has taken place inside the factory," Detective Sergeant Danny Taylor told media at the scene.
"The witness accounts are that we believe there's been a weapon used. The male victim, who is known to the offender, is currently in hospital undergoing surgery."
The weapon used in the assault was believed to be a hammer, Nine News reported. The two men were known to each other.
A 51-year-old Cranbourne East man was taken to The Alfred hospital with serious head injuries. A hospital spokeswoman said he remained in a "critical but stable" condition on Friday morning.
A 26-year-old Boronia man was arrested at the scene on Thursday, and police said he has since been charged with intentionally cause serious injury and other assault-related offences.
He was remanded to face Melbourne Magistrates Court on Friday.