Caley Thistle came from behind to record a 1-1 Championship draw against Morton at Caledonian Stadium.
The Greenock outfit took the lead after just six minutes through Charlie Telfer, with Jordan White restoring parity on the stroke of half time.
Neither team could find a breakthrough in the second half, with the result meaning John Robertson’s side remain third in the table, but now five points adrift of leaders Ayr United.
Inverness were unchanged for a fifth successive game, which had overseen the undefeated start to the campaign.
That run was put under threat after just six minutes however, with a slack pass from Brad Mckay capitalised on by the visitors, as Michael Tidser set up Telfer for a low drilled finish past Mark Ridgers.
Despite the setback it was a bright response from Caley Jags, who threatened through Sean Welsh’s deflected free kick which drifted over the bar, before the midfielder’s excellent through ball found Aaron Doran, who was foiled by onrushing goalkeeper Ryan Scully.
Doran had an even better chance on 34 minutes when he was teed up by Liam Polworth, with his shot forcing a beaten save from Scully.
Inverness deservedly levelled on the stroke of half time through a well worked move, with Coll Donaldson’s long ball forward picking out White, who impressively spun past Kerr Waddell before drilling low past Scully at his near post from six yards.
It was Morton who created the best opportunities after the interval, with Waddell’s header from a Tidser corner cleared off the line by Welsh, while Oliver’s run was blocked by Donaldson.
Caley Jags finished strongly however, with substitutes Riccardo Calder and Daniel MacKay combining late on in a move which saw the teenage attacker denied by Scully.
The Morton goalkeeper made another fine save to tip Nathan Austin’s header over in the dying stages, however there was to be no way through for either side.