Nathan Shaw’s second-half strike and Scott Allardice’s penalty sealed all three points for the Caley Jags as they extended their winning run to four matches in a row.
Head Coach Billy Dodds made one change to the side which beat Raith Rovers 2-0 at the weekend as Austin Samuels replaced Aaron Doran in the Starting eleven.
Chances were at a premium in a tight first-half. An early free-kick from Sean Welsh went just wide of the mark while Arbroath went close as Mark Ridgers held Lewis Banks’ shot.
Caley Thistle looked to crave a chance out after 12 minutes as Sean Welsh’s pass found Bily Mckay in the box but the striker couldn’t quite control it as Derek Gaston gathered it.
Caley Thistle started the second-half on the front foot and took the lead through Nathan Shaw after 53 minutes. It was a great move from the home side as Allardice’s pass found Welsh through the middle and the captain played a great ball to Jay Henderson and his cross was finished by Shaw in the box to open the scoring.
On the hour mark, Billy Mckay had a chance to make it 2-0 as he met Nathan Shaw’s cross in the box but the striker’s header was over the bar and behind from a difficult angle.
After 73 minutes, captain Sean Welsh went close with a half-volley from around 25 yards out but his effort went just over the bar.
But five minutes later Caley Thistle were given the chance to make it 2-0 as Jay Henderson was fouled by Arbroath defender Steven Hetherington.
Scott Allardice stepped up to take the spot kick and his powerful effort was into the top right-hand corner past Arbroath keeper Derek Gaston.
Caley Thistle were then reduced to ten men as Jay Henderson was shown a straight red card for a late challenge on Michael McKenna.
Despite Arbroath’s late pressure, Caley Thistle remained well organised for the closing stages to hold out for a 2-0 win. The result puts Caley Thistle just two points off the play-off positions.