The fire that destroyed St. Anne Catholic Church in New Castle in eastern Indiana, was arson, authorities said on Tuesday.

The brick church, built in 1924, had been a city landmark for eight decades. The damages are estimated at $1.5 million to $2 million.

According to The Associated Press, firefighters battled the fire for nearly six hours. No one was in the church at the time of the fire, but one firefighter suffered a back injury while fighting the fire.

There is a $25,000 reward for information leading to the arrest and conviction of the person or persons responsible for the fire.