Top set vs unkown

[PokerPhenom]

PokerStars No-Limit Hold'em Tourney, Big Blind is t200 (9 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO (t10417)
Hero (t7944)
SB (t9133)
BB (t8009)
UTG (t3000)
UTG+1 (t2590)
MP1 (t6140)
MP2 (t5905)
MP3 (t9050)

Preflop: Hero is Button with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls t200, <font color="#666666">2 folds</font>, MP3 calls t200, CO calls t200, <font color="#CC3333">Hero raises to t1044</font>, <font color="#666666">2 folds</font>, UTG+1 folds, MP3 calls t844, CO folds.

Flop: (t2788) J[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
MP3 checks, <font color="#CC3333">Hero bets t1255</font>, MP3 calls t1255.

Turn: (t5298) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP3 bets t1800</font>, Hero calls t1800.

River: (t8898) 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP3 bets t4951 (All-In)</font>, Hero calls t3845 (All-In).

Final Pot: t16588


I couldn't see him having much here other than maybe 88 or axd. But with axd I don't think he leads out on the turn which is why I just flatted plus I have outs to a made flush. Either way do I need to shove turn to get rid of ax with one diamond? As played fold to river shove? Thanks in advance.