"We will send Letheren for a scan on Monday. It doesn't look too promising just now," said the boss after the game.
"We will need to look at the goalkeeping situation and try to bring someone in in the short term.
"I know Scott pretty well having worked with him over the last two or three years. I know how good a goalkeeper he is.
"He's a young keeper and has had to bide his time because of Kyle's form but his handling was fantastic. When we needed him, he came and collected things and kept the pressure off us."