JJ Turn CHECK RAISE!

[Riceman]

I hadn't been sitting for very long so I didnt have too much of a read on this guy, though I had seen him check raise the turn before and then fold the river. I see people do this so often and it seemed he was trying to represent a K here, but his flop play didn't indicate top pair. Is it bad to play back at him?

PokerStars 3/6 Hold'em (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is UTG+1 with J[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img].
UTG calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">8 folds</font>, UTG calls.

Flop: (5.33 SB) K[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG calls.

Turn: (3.66 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, <font color="#CC3333">Hero??</font>