HOUSTON — A woman in a trenchoat entered the Houston megachurch of celebrity pastor Joel Osteen and started shooting Sunday afternoon and was killed by two off-duty officers working security, police said. They added a young child with the woman was critically hurt and another man nearby was wounded.

Houston Police Chief Troy Finner said the woman entered the church with a long gun and a backpack shortly before 2 p.m. on Sunday, accompanied by a child about 4 or 5 years old. He said the child was in critical condition after being taken to a hospital.

The shooting happened between services at the megachurch that is regularly attended by 45,000 people every week, making it the third largest megachurch in the U.S., according to the Hartford Institute for Religion Research. Osteen’s televised sermons reach about 100 countries.