AK early on in STT

not to sure what to do here. is a re-raise PF a good play? Should i be checking behind on flop? any way i can call here?

Poker Stars $3.00+$0.40 No Limit Hold'em Tournament - t10/t20 Blinds - 9 players - View hand 165618
The Official DeucesCracked.com Hand History Converter

UTG+1: t1220 M = 40.67
UTG+2: t1430 M = 47.67
MP1: t1450 M = 48.33
MP2: t1470 M = 49
CO: t3440 M = 114.67
Hero (BTN): t1550 M = 51.67
SB: t1480 M = 49.33
BB: t1500 M = 50
UTG: t1460 M = 48.67

Pre Flop: (t30) Hero is BTN with K A
3 folds, MP1 calls t20, MP2 raises to t60, CO calls t60, Hero raises to t240, 4 folds, CO calls t180

Flop: (t590) 5 5 8 (2 players)
CO checks, Hero bets t345, CO raises to t1020, Hero folds

Really tough to say without a read, this early in the tourney, and with such a low buy-in...

Since CO is early chip leader...

* Could be bullying
* Could be playing any two and hit two pair or set
* Could be donking

he was a maniac for sure. 1st hand of the tourney he called a PF AI bet from UTG with KJ. doubled up in that spot. the more i think about it i almost think i should have made the ridiculous overbet shove PF. i hate that play a lot, but at such low stakes it might even be +EV.....of course i am saying this after bubbling the money spot.