Three suspects in the execution-style murder of a 30-year-old man at a Melbourne boxing event have been named and police are hunting a fourth, amid fears the slaying could fuel a bloody war between rival Middle Eastern gangs.

Two other men, a 34-year-old from Lalor and a 32-year-old from Craigieburn, were critically injured in the brutal attack outside the Melbourne Pavilion in Kensington about 10pm on Friday.

One of the wounded men was punched and kicked in the foyer of the function centre, before the gunmen fled the scene.

The men wanted over a shooting at a Melbourne boxing event have been named as Abdullah El Nasher, Ali El Nasher, Mikhael Myko

Homicide detectives want to speak to brothers Abdullah El Nasher, 27, and Ali El Nasher, 28, and Mikhael Myko, 25, from Pascoe Vale.