The police said it appeared that the victims had been involved in an earlier dispute with the men.
In many ways, this struggle is seen as a direct outcome of that earlier armed dispute.
The police believe the earlier dispute may be related to the shooting.
"It seems this was the result of an earlier dispute, so the parties were somewhat known to each other," a police official said.
The police said they did not know the nature of the earlier dispute or who was the aggressor in the later encounter.
This was the earliest major industrial dispute in Scottish history.
In spite of the early disputes, the Dawn proved to be successful.
This followed an earlier dispute over the exact name of the station.
A white man and woman had been hurt in that earlier dispute with four men, three of whom were black.
An earlier dispute over the foreign rights had been settled out of court in 1992.