Inverness boss Terry Butcher was left disappointed that his side were unable to see the game out as Hearts came away from the Highland Capital with a 1-1 draw.
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A wonderful long range effort by Owain Tudur Jones in the 19th minute looked like being enough to give Inverness all three points.
But in the 90th minute, Tudur Jones was adjudged by referee Willie Collum to have felled Callum Paterson inside the penalty box and Marius Zaliukas fired home from the spot to earn Hearts a point.
The result was enough to extend Caley Thistle's unbeaten run to 10 games, but Inverness manager Butcher was left to rue what might have been.
He said: "It's frustrating more than anything else. I had a right go at the players because I felt we threw away two points.
"We had chances to win the game, although we were nowhere near our best and gave the ball away too much in the second half.
"The most disappointing aspect is that we didn't kill Hearts off.
"I didn't think it was a penalty, but the referee has given it and he's closer.
"Again it's disappointing because I felt we should have cleared the danger."
After a difficult week off the field for financially-stricken Hearts, boss John McGlynn was pleased with the point against one of the Scottish Premier League's in-form teams.
He said: "I thought for our second half performance we deserved the point.
"We kept Inverness at bay and dominated the second half, although I thought the goal was never going to come.
"Caley Thistle defended well, so we were grateful to get the penalty that Marius Zaliukas slotted away."