Party 2-4: Need a river plan

[Yerma]

Ok, this should be simple but for whatever reason, I just can't think this through. It's probably that I've got no clue what the other guy has.

Here are the notes I took on villain this session:

cold calls (J9s,ATo)
follow-thru bets on all streets AJ-high 3-ways on coordinated board>


So, not much of a read at all...

Here is the hand:

Party Poker 2/4 Hold'em (9 handed) internettexasholdem.com

Preflop: Hero is UTG with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, MP3 calls, <font color="#666666">3 folds</font>, BB calls.

Flop: (6.50 SB) 5[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, MP3 calls, BB folds.

Turn: (4.25 BB) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, MP3 calls.

River: (6.25 BB) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>

Ok, what is your plan now?

[thirddan]

i would check/call...