JJ in 3bet pot

[BreakTa]

Didn't have many hands on this guy so no real reads but he hasn't been out of line...

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
6 players
Converter

Pre-flop: (6 players) Hero is UTG+1 with J[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/heart.gif[/img]
<font color="#cc0000">UTG raises to $0.85</font>, <font color="#cc0000">Hero raises to $2.9</font>, 4 folds, UTG calls.

Flop: 3[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/club.gif[/img] ($6.15, 2 players)
UTG checks, <font color="#cc0000">Hero bets $4</font>, <font color="#cc0000">UTG raises all-in $21.15</font>.

Is this a fold?