Fold this AK PF?

[RichC.]

PokerStars No-Limit Hold'em Tourney, Big Blind is t600 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG (t4996)
Hero (t13424)
MP1 (t13458)
MP2 (t5454)
MP3 (t6765)
CO (t13135)
Button (t5367)
SB (t12195)
BB (t9279)

Preflop: Hero is UTG+1 with K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t1850</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">CO raises to t5450</font>, <font color="#666666">3 folds</font>, Hero ???

Reads: I had been a bit more active but had solid to premium hands each time since villian was moved to the table.

Villian had also shown down strong hands. Looked afterward to see he was in top 30 on TLB for year, still early i know.

Not quite near the money either. Stars $20, 10k gtd.