Mugshot released of suspect in Mason County Courthouse fire By Lauren Reid Miller allegedly set the fire because he was upset over a previous family court case. MASON, Texas - The McLennan County Sheriff's Office has released the mugshot of the suspect who allegedly started the Mason County Courthouse fire. Nicholas Miller was captured near Waco after driving through Burnet, Georgetown, and Temple. County Judge Jerry Bearden called the fire "a real tragedy." He says they originally got a call on February 4 at around 10 p.m. about the fire. Multiple fire agencies from nearby towns were called and Judge Bearden says by about 1:30 a.m. everything was destroyed. He says all that is left is basically the walls and outside pillars.