Federal arson officials now are among nearly three dozen investigators looking into a fire that gutted an historic San Antonio church.
The Childress Memorial Church of God in Christ went up in flames Friday. It's about a mile north of an area where at least five other fires over the past two months have been ruled as arson blazes.
A federal team from the Bureau of Alcohol, Tobacco, Firearms and Explosives joined authorities who already include a forensic chemist, engineers and accelerant detection dogs.
San Antonio Fire Chief Charles Hood said investigators also are trying to stabilize the 100-year-old church and recover artifacts from the rubble that are of value to people who attended services there. He's estimates the loss at $3 million.