Laurent Koscielny was offside for Arsenal's penalty, says Burnley boss Sean Dyche

Sean Dyche said he felt "sick" after Arsenal's controversial win over Burnley and insisted the decisive penalty should not have been awarded.

The Clarets looked as though they had snatched a point at the Emirates Stadium on Sunday when Andre Gray scored from the spot in the 93rd minute to cancel out Shkodran Mustafi's opener.

But there was more drama to follow as Arsenal won a penalty of their own five minutes later when Ben Mee caught Laurent Koscielny - who looked to be in an offside position - with a high boot.

Alexis Sanchez scored the resulting spot kick to grab victory for the Gunners, who also won at Turf Moor earlier in the season thanks to a late goal from Koscielny when he again appeared to be offside.

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"It's sad that big decisions again don't go our way," Burnley manager Dyche told Sky Sports. "We have been unfortunate against this side twice. At home we know what happened in the dying seconds with a ridiculous moment and it's happened again with an offside.

"Our team are doing their job, clearing their line like they should so we get out of the box, and he's offside. Forget about the penalty, if he's offside it's offside. It's very disappointing after a spirited performance.

"You can't help but be sick at the end, obviously, because you need big decisions to go in your favour and they didn't today."

Asked to expand on his thoughts on the penalty decision, Dyche said: "Even the challenge is a strange one, because if you are defending properly you are looking at the ball, and all he is doing is looking at the ball and then he turns round to clear it.

"But it's offside. It's hard to resist the temptation to say that you don't always get big decisions at these places. I don't think we did today."

The defeat means Burnley have still only picked up one point on the road this season but Dyche, who said he had not spoken to the officials as there was "no point", did take some positives.

"Nobody gave us a chance, so I was pleased with the performance," he said.

"We are growing, we are not anything other than a work in progress. Coming down here is tough and we knew we would have to be resolute and defend properly, we felt we could catch them on the counter and we nearly did on a few occasions.

"Then the mentality towards the end to get something, and we should have got something, was excellent."