AKo facing a turn checkraise

[ClimbRock512]

Party 5/10. Opponent is a TAG, maybe tricky - haven't seen him get out of line though.

Playing 8 handed. UTG+1,+2 folds, villian raises I 3bet in the CO with black AsKc. Blinds clear out and villian calls.

Flop comes down 875 (two tone) check bet call

Turn is the 8 of spades (two spades now). I bet (should this be a check behind)? Villian raises....call down?

[shadow29]

I would check behind on the turn.

As is, I fold to a c/r on the board pairing.