Football officials have written to two clubs after a friendly match was abandoned at half-time with one side unwilling to continue due to what it called the "aggressive direction" of the game.
Spennymoor, from the Evo-Stik Northern Premier League, were visiting Newton Aycliffe from the Northern League - the ninth tier of football - on Tuesday evening, and refused to play the second half of the match.
In a statement on their website, Spennymoor FC said the decision to pull out was made by the management team.
It continued: "The team didn't play the second half over concerns about the aggressive direction the match was taking and the management decided it was a risk to the players to continue.
"The club is in full support of this decision as we consider the welfare of our staff and players as a top priority."
The club apologised to fans who travelled to the match.
John Topping, secretary of the Durham County Football Association, said: "I have received a report regarding the game and I have written to both teams and match officials for their version of events."
Newton Aycliffe chairman Alan Oliver told the Northern Echo newspaper: "As a club we don't think we have done anything wrong."