NEW : Brazilian firefighters call off search for survivors . Officials had no comment on what caused the collapse at Reborn in Christ Church , a popular evangelical congregation in the heart of Brazil 's largest metropolis . NEW : Death toll rises to nine in church roof collapse . Concrete slab collapsed during service at evangelical church , authorities say . It is one of largest congregations in Sao Paulo , Brazil .
NEW : Brazilian firefighters call off search for survivors . NEW : Death toll rises to nine in church roof collapse . Concrete slab collapsed during service at evangelical church , authorities say . It is one of largest congregations in Sao Paulo , Brazil .