Nick Montgomery has questioned why referee Nick Walsh wasn't called to review a penalty incident for Hibs as Martin Boyle tumbled in the box after two spot-kicks awarded to Celtic.

The Hibs boss was left perplexed as Adam Idah's two penalty strikes earned Celtic victory at Easter Road.

The hosts had levelled through Dylan Levitt after the break but a late penalty call - for Joe Newell's challenge on Kyogo - saw Celtic snatch victory.

And Montgomery was left gutted as he claimed his side should have had a spot-kick of their own when Boyle went down under challenge from Alexandro Bernabei.

Commenting on the penalty calls, Montgomery told Sky Sports: "The first one Nectar has gone to try and win the header, I'll have to watch it again but they've both gone to win the header and if that happens anywhere else on the pitch I think the ref just stops the game and possibly gets treatment for the players and it's a drop ball.

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"I thought the second one, I didn't know anyone that really thought that was a penalty including the fans to the Celtic players. And then he goes over to the VAR so...

"I have seen Martin Boyle's penalty [claim] and I think if someone calls him over to have a look at that...there is contact, he has come from behind and caught him on his thigh and it doesn't matter how he has fallen down. 

"If he goes over to look at that on the VAR it is a penalty. That's probably the one I'm most disappointed with."

Reflecting on the match, Montgomery added: "It was a tough one to take. I thought we probably deserved to win the game. I don't really need to say much.

"I think everybody can watch that live and make their own minds up.

"I've seen some of the incidents, I'm just really disappointed."