Television evangelist Joel Osteen speaks at a news conference at his Lakewood Church after a shooting incident in Houston

In a still image from video, television evangelist Joel Osteen speaks at a news conference with law enforcement officials at his Lakewood Church after a shooting incident in Houston on Sunday. 

Two off-duty law enforcement officers in Houston took down a woman who opened fire on Sunday at Lakewood Church, one of the largest evangelical churches in the U.S. led by televangelist Joel Osteen, police said.

A woman in her early 30s entered the megachurch shortly before 2 p.m. local time, armed with a long rifle and accompanied by a child around 5 years old, and began firing, Houston Police Chief Troy Finner told reporters on Sunday.