HOUSTON (AP) — The shooter at a Texas megachurch on Sunday had a history of mental illness and brought their young son to the attack that was carried out using an AR-style rifle and ended in an exchange of gunfire with two off-duty officers, authorities said Monday.

Houston police identified the shooter as Genesse Ivonne Moreno, 36, who they say wore a trenchcoat and carried a backpack upon entering Lakewood Church, which is led by the pastor Joel Osteen. Moreno used both male and female aliases, but investigators who looked at past police reports found that Moreno identified as female, Houston Police Commander Chris Hassig said.

The attack happened in between services at the Houston megachurch — located in a former NBA arena — and sent worshippers scrambling for safety.

HOUSTON (AP) — A woman in a trenchcoat opened fire with a long gun Sunday inside celebrity pastor Joel Osteen’s megachurch in Texas, sending worshippers rushing to find safety while two off-duty officers confronted and killed the shooter. Two other people were shot and injured, including a 5-year-old boy who was in critical condition.

The violence erupted shortly before the Houston church’s 2 p.m. Spanish service was set to begin, just as the rest of the country was preparing for the Super Bowl. The woman entered the enormous Lakewood Church – a building with a 16,000-person capacity that was previously an arena for the NBA’s Houston Rockets — with the boy who was later hurt in the shootout with police. A man in his 50s was also wounded.