EP CC from TAG

[JDErickson]

MP1 here 20/9/1.67

Party Poker (10 handed) converter

Preflop: Hero is UTG+1 with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img]. CO posts a blind of $1.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, MP1 calls, <font color="#666666">5 folds</font>, ....

Twice this happened to me tonight where a TAG called my UTG or UTG+1 raise cold. Threw me for a loop.

How do others handle this situation. What hand can you put him on?