"We spoke to Graham on Saturday afternoon, as soon as his preparations for the Notts County game had been completed, to inform him that we wanted to offer him the position as first team manager win, lose or draw on Saturday.
"I think everyone at the club has been impressed with the way Graham has applied himself and in the way he has placed his own stamp on the role under difficult circumstances.
"He knows the players and the club really well, having been with us for over four years and we are confident that his experience at the highest levels of the game will help him with his stated aim of pushing this club forward.”
More top news
Sandy Murray, of Police Scotland, was was giving evidence at the trial of a bus driver who denies killing Ryan Baird by dangerous driving.
34-year-old Christopher Peck was involved in a head-on crash with a drunk driver. His funeral has taken place in his hometown, Workington.
The arrests come weeks after a much-publicised series of appeals to mark the 30th anniversary of the 18-year-old's death.