HOUSTON (AP) — A shooter's motive for opening fire in celebrity pastor Joel Osteen’s megachurch remained unclear Monday as authorities searched the suspect's home in suburban Houston and identified the weapon used in the attack as an AR-style rifle.

The house in Conroe, Texas, is more than 50 miles (80 kilometers) north of Lakewood Church, where in between busy services sent worshippers scrambling to find safety.

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