10/20 AA rr'd pot strange board OOP

[EC10]

villain is unknown. hasnt been playing too loose or tight, haven't seen anything special/peculiar from him. my image is prob pretty loose.

10/20 eff stacks $2300 6 max

i have A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/diamond.gif[/img]

utg+1 raises to $70, CO calls, i raise to $295 on btn, utg+1 folds, CO calls

flop 5[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img] pot $690

CO checks, i bet $600, he calls

turn 9[img]/images/graemlins/spade.gif[/img] pot $1890

CO checks, i ??? (i checked)

river J[img]/images/graemlins/spade.gif[/img] pot $1890

CO checks, i ???