Common situation - TP, scare card on the turn

Table has been loose. villain 60/6/2
PokerRoom No-Limit Hold'em, $1 BB (6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

BB ($70.40)
UTG ($173.50)
Hero ($99.65)
CO ($61.70)
Button ($56.50)
SB ($27.60)

Preflop: Hero is MP with J/images/graemlins/heart.gif, A/images/graemlins/spade.gif.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $4</font>, CO calls $4, <font color="#666666">3 folds</font>.

Flop: ($9.50) A/images/graemlins/diamond.gif, 8/images/graemlins/club.gif, 5/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $6</font>, CO calls $6.

Turn: ($20.50) 9/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $9</font>, Hero?

I generally am unsure how to proceed in these situations (TP, out of position, straight and flush card hits turn).

Also, I'm not sure I should be playing AJ0 here. I am thinking this was a fold to begin with.

I'm thinking that CO may not have the flush, He may have called you with AK, or AQ.

I'd probably fold here.

[ QUOTE ]
I'm thinking that CO may not have the flush, He may have called you with AK, or AQ.

I'd probably fold here.

[/ QUOTE ]

So, with AK, what would you do here?

I'd lead with AK and I'd do it for the same reason that I think your behind to AK or AQ here. That reason is that unless CO is pretty loose, what hands can he have that call your PFR and bet/call you on the flop? Any two suited seems unlikely.

I'd say he has AK, AQ or maybe even AJ with the Q, K or J of diamonds.