AKo UTG in 4/8 live

[wrexen]

I've just sat down in a 4/8 ring game at the local casino. It's my third hand, so no good reads, but CO has a long, flowing mullet and MP might be a reasonable player. I get AKo UTG.

Fold, Hero raises, folds to MP who calls, folds to CO who calls, SB folds, BB calls.

Flop: AT3 rainbow
Hero checks, MP bets, CO calls, BB folds, Hero raises, MP raises, CO caps, Hero calls, MP calls

Turn: J, completing the rainbow
Hero checks, MP checks, CO checks

River: J
Hero checks, MP checks, CO says "someone's lying!" and bets, Hero calls, MP calls

Thoughts?

[EvanJC]

bet the flop, the turn looks okay, and check/call the river i guess

[River2Pair]

ni han