FBI agents have searched an apartment in Phoenix as part of an investigation into a shooting outside a Dallas venue hosting a contest for Prophet Muhammad cartoons.
A police officer shot and killed two gunmen who opened fire outside the event last night. A security officer was wounded in the shooting.
Garland police officer Joe Harn said the men had used assault rifles and that one officer had fatally shot both gunmen.
Mr Harn also said investigators searched the men’s car and detonated several suspicious items, but no bombs were found in the vehicle.
“We were able to stop those men before they were able to penetrate the area and shoot anyone else,” Mr Harn said.
The cartoon event yesterday featured speeches by American Freedom Defence Initiative president Pamela Geller and Geert Wilders, a Dutch lawmaker known for his outspoken criticism of Islam.
Mr Wilders, who has advocated closing Dutch doors to migrants from the Islamic world for a decade, has lived under round-the-clock police protection since 2004.
The FBI said the Phoenix residence was being searched for indications of what prompted the attack and spokeswoman Katherine Chaumont said no other locations in Phoenix are being investigated.